Rør, hvis du tør



Re: Rør, hvis du tør - Brocksieper

Indlægaf kvik » 18. jan 2014, 18:18

EARMAX Pro (€690)

EARMAX Pro.jpg
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Tube headphone amp for dynamic phones. OTL design Class A triodes technology, external power supply. All tube circuit with miniature double-triodes for signal amplification and output stage (ECC81 and E88CC/6922). All tube tested and selected by Mr. Brocksieper personally. All Brocksiper devices are completely `Made in Germany´, in small series manufacturing. Each amplifier is tested, measured and burned-in prior to shipping. The EARMAX can handle open circuit (no load/phons connected) as well as it is almost perfectly protected against shortage.

For all dynamic headphones with impedance beyond 35 Ohm. For maximum performance we recommend headphones with 200-2000 Ohm impedance. For lower impedance phones (especially under 60 Ohms) we highly recommend the EARMAX Silver Edition.


• Bandwidth: 4Hz - 1MHz (600 Ohm), 7Hz - 0,6MHz (35 Ohm)
• Frequency response: 20 - 20000Hz +/- 0,2dB
• Distortion (THD):
< 0,3% (RL = 35 Ohm) max.
< 0,04 % (RL = 35 Ohm) typ.
< 0,1 % (RL = 600 Ohm) max.
< 0.007 % (RL = 600 Ohm) typ.
• Crossover: better than -80dB/10kHz
• Noise, Vol. max.: < -70dB
• Ri: 35 Ohm
• Signal to noise ratio: > 90dB
• Output power: > 1 mW (eff.)
• Power consumption: 11VA
• Weight: 400g (amplifier), 500g (power supply)

https://brocksieper.com/en/portfolio/earmax-2/
http://www.tubeampdoctor.com/product_in ... ZwvgBKYwf0



EARMAX Silver Edition (€890)

EARMAX Silver Edition.jpg
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Stronger power supply and output stage for low impedance dynamic headphones (more than 20 Ohm).

EARMAX amps in general are OTL design (OutputTransformerLess). The actual output power and quality is depending on the load connected. Low impedance (low Z) headphones draw a lot of current and this requires a higher current power supply. The lower the headphones impedance is, the higher the power of the OTL amplifier is needed. The Brocksieper EARMAX Silver Edition headphone amp is optimised for this and comes with a very strong power supply. The SE is the identical design like the Brocksieper Anniversary model (just silver instead of gold hardware and no flightcase) known and prised for its outstanding performance among HiFi enthusiasts.


• Bandwidth: 4Hz - 1MHz (600 Ohm), 7Hz - 0,6MHz (35 Ohm)
• Frequency response: 20 - 20000Hz +/- 0,1dB
• Distortion (THD):
< 0,1% (RL = 35 Ohm ) max.
< 0,03 % (RL = 35 Ohm) typ.
< 0,1 % (RL = 600 Ohm) max.
< 0.002 % (RL = 600 Ohm) typ.
• Crossover: better than -80dB/10kHz
• Noise, Vol. max.: < -85dB
• Ri: 20 Ohm
• Signal to noise ratio: > 95dB
• Output power: > 50mW (eff.)
• Power consuption: 16VA
• Weight: 410g (amplifier), 800g (power suppy)

https://brocksieper.com/en/portfolio/earmax-2/
http://www.tubeampdoctor.com/de/shop_EA ... ieper_1148
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Re: Rør, hvis du tør - Vincent Audio

Indlægaf kvik » 18. jan 2014, 18:51

Vincent Audio KHV-1 (£845)

Vincent Audio KHV-1.jpg
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With its two 12AX7 valves, when used as a headphone amplifier, it produces the warm, soft yet precise sound that music-lovers appreciate so much. It manages the bridging as a preamplifier. Here it is an ideal addition to the SP-996 and SP-997 monos. Now there is a small, space-saving stereo unit for harmonious, open sounds.

• Frequency response: 20 Hz - 50 kHz +/- 0.5 dB
• Nominal Output Power: 400 mW (300 Ohm), 1,75 W (32 Ohm)
• Output voltage Pre Out: 2V (max. 4V)
• Total harmonic distortion: < 0.1 % (1 kHz, 100 mW)
• Input sensitivity: 600mV
• Signal-Noise ratio: > 90 dB
• Input impedance: 47 kOhm
• Inputs: 2 x RCA (CD/Aux source selector)
• Outputs: 1 x RCA Pre Out, 1 x headphone jack 6,3 mm
• Tubes: 2 x 12AX7, 4 Level Tube dimmer switcher
• Mains supply: 230 V/50 Hz
• Dimensions (WxHxD): 160 x 265 x 210 mm
• Weight: 3,8 kg
• Colour: black/silver

https://www.vincent-tac.de/en/product-l ... khv-1.html
https://www.vincentshop.co.uk/KHV-1
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Re: Rør, hvis du tør - Solaja Audio

Indlægaf kvik » 18. jan 2014, 19:05

Solaja Audio Sedra One (€300)

Solaja Audio Sedra One.jpg
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SE headphone amplifier with one input and a passive volume control comprised of a 6N2P (double triode) feeding a single EL84 (6P14P) per channel with linear power supply to deliver 0.5W output per channel in triode mode without negative feedback.

The Sedra Two SE integrated amplifier with three inputs and a passive volume control also sports a 6N2P feeding a single EL84 per channel with a linear power supply that delivers 1.5wpc in triode deliver without negative feedback and nearly identical specs. The Sedra Three preamp runs a 6N6P and EZ81 rectifier and has three inputs and two outputs. Its frequency response is 9Hz-150KHz/-3dB and gain is at unity.


• Tubes: Input-6N2P / Power-EL84
• Power Output, W: 2X0.5
• Frequency Response, -3dB: 13Hz-38KHz
• Noise Level, dBA: -87.6
• Dynamic Range, dBA: 87.2THD, %: 1.5
• Stereo Croostalk, dB: -65
• Input Impedance, KOhms: 100
• Output Impedance, Ohms: 50,100,300,600
• Input Voltage, V: 115/230 (on requeste)
• Dimensiones, mm: 160 (w) x 250 (d) x 165 (h)
• Weight, Kg: 5
• Input: RCA
• AC: Standard IEC Jack with fuse protection and power switch

http://www.solajaaudio.com
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Re: Rør, hvis du tør - Arkhipov's Laboratory

Indlægaf kvik » 18. jan 2014, 20:48

Arkhipov's Laboratory ($450-$2800)

Arkhipovs Laboratory Universal Dual Octal.jpg
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Arkhipov's Laboratory various models.jpg
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The Arkhipov’s Laboratory offers a line of exclusive, hand assembled headphone amplifiers - with a choice of valve (tube), solid-state and hybrid configurations. Our design philosophy is aimed at achieving superlative audio performance at the power levels needed by high quality headphones. All our valve (tube) amplifiers use proven, classical circuit topology based on triodes or pentodes as well as combinations of both. Output transformers are hand wound and designed individually for each unit. This results in a brilliantly light, lively and open sounding amplifier having excellent dynamic range suitable for reproduction of all types of music - from the lightest instrumental and vocals to hard driving rock, electronic or jazz.


FEATURES

Arkhipov amplifiers cater for a wide range of headphone impedances from 20 to 600 Ohms. Some models accept loads down to 8 Ohms. Each unit has dual outputs using two standard 1/4" (6.35mm) jacks. Signal source for our amplifiers is line-level of 250mV rms or higher, from CD players, phono preamps, computer sound cards etc. Arkhipov amplifiers are constructed by hand in laboratory conditions. Metal chassis parts are professionally fabricated with a high-grade black powder-coat finish. The timber plinths are entirely made from solid timber with a choice of oak, cherry, plum or other quality woods. All timber parts are coated with a hard-wearing, satin lacquer finish. Wiring is point-to-point with teflon insulation used exclusively and all components are of the highest quality. Each unit is subject to rigorous inspection & testing during each stage of construction, and additionally, undergoes a week-long proving cycle including burn-in, performance & listening tests.

Our Top-Tier models are split systems with separate power supply and amplifier units. The power supplies use tube rectification as in our "Dual Series". The amplifier unit comprises two tube stages and the output transformers. The Monoblock Series with integral power supply and tube‑transformer outputs, make up our middle price range. Our Budget range consists of a number of popular hybrid (tube and solid‑state) in the MELO series and the fully solid-state ALTERNATIVE. These models are available in standard format (St) using PCB construction or the slightly higher priced (Lx) hand-wired versions with higher quality components.


RANGES

• Top Tier — UNIVERSAL DUAL OCTAL (STX), ULTRA DUAL OCTAL:

UNIVERSAL DUAL OCTAL and ULTRA DUAL OCTAL are two-unit headphone amplifiers using our third-generation output transformers and are based on previous two-unit series as well as the "Jubilee Series". Each set comprises two separate chassis with inter-connecting cable between the amplifier and power supply. A toroidal power transformer feeds the system with a tube type rectifier, DC filament supply, and bayonet type connectors on the cable between the units. This arrangement of the "Dual" series totally eliminates any electro‑magnetic influence from the power transformer on the amplifer. While maintaning our Laboratory's traditional split system designs, the new "Octal" series is constructed with larger external dimensions and wooden decorative panels having a more complex profile. Both units use the highest quality components, octal based tubes and world-class output transformers such as SOWTER and LUNDAHL. The UNIVERSAL DUAL OCTAL amplifiers use the 6L6 (5881) as output tubes and 6SL7 as the driver while the ULTRA DUAL OCTAL uses the 6V6 and 6SN7 types. Both amplifier power supplies use 6X5 rectifiers. This new range of amplifiers, while retaining the basic characteristics of previous series, have a more expressive middle frequency range giving a very realistic sound image of the instruments being played as well as their spatial disposition. Bass is solidly fundamental, while the treble is accurate without excessive brightness.

For personal audio use Arkhipov Laboratores have introduced a new version of the UNIVERSAL DUAL OCTAL STX range, specifically designed to drive electrostatic headphones made by the STAX company. This series uses a combination of 6L6 and 6SL7 tubes with LUNDAHL output transformers.
The power transformer uses an M4 steel core, coupling capacitors are JENSEN COPPER paper/oil while signal wiring is single-core silver of various cross-sections also by JENSEN. These amplifiers exhibit a warm, velvet-like reproduction over the full frequency range. Electrostatic headphones driven by these amplifiers give fully dimensioned and accurate response.


• Monoblock Series — UNIVERSAL KENO, ULTRA EL:

A defining feature of our Universal series is their balanced performance and compatibility with all music genres, using triode-connected pentode output tubes. The flagship of the Universal series is the UNIVERSAL KENO. It uses two double-function tubes, triode-pentodes ECL805 (ECL85, 6GV8). The power supply uses a 6X5 (EZ35) rectifier. This range of amplifiers apart from suiting all musical styles, is sonically incredibly light and clear sounding making listening to your favourite music a real pleasure.

Ultra series units on the other hand, employ output pentodes connected in ultra-linear configuration which gives their own special quality to the reproduced sound. The ULTRA EL probably does this best, using two pentodes EL84 (6BQ5) and double triode 6SN7. The sound is light and transparent with no confusion between instrumental & vocal content regardless of the scale of the piece. Middle range frequencies reproduce clearly & accurately with a sonic image that is charged with emotion. Particularly suitable for playing classical and or jazz music.


• Budget Range — MELO Lx/St:

This design is a two-stage combination employing a tube voltage amplifier input stage and transistors as current amplifiers for the output providing matching for the low impedance (20 to 600 Ohms) loads presented by headphones. At present these amplifiers are built using selected vintage 6SN7 tubes and point to point wiring in the elite LUX version (Lx) while the simpler STANDARD version (St) is built on printed circuit boards. Earlier we had made MELO amplifiers based on other double triodes such as 6FQ7, 6CG7 or 12AU7, ECC82, 5963, 6189. MELO amplifiers display the warm, richly endowed sound characteristic of tubes. At the same time they possess fast attack and magnificently detailed sound with well formed bass and bright trebles.


PRICES (november 2018)

Melo St - $450 // Melo Lx - $750-900 (depending on configuration; Audio Note Kaisey, Viahay, etc. in top version)
Monoblock UNIVERSAL & ULTRA - temporarily paused due to lack of suitable transformers
UNIVERSAL  DUAL  OCTAL & ULTRA DUAL OCTAL - $2000-2500 (depending on configuration and tubes; we use only vintage NIB/NOS tubes from 1940-60s) // UNIVERSAL  DUAL  OCTAL (STX) for STAX - $2500-2800



http://arkhipovs-laboratory.com/amps_eng.htm
https://doctorhead.ru/search/?IBLOCK=CA ... ratory&s=+
http://forum.doctorhead.ru/index.php?sh ... 499&st=550
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Tento PortaDAC 1866OCUB | Parasound D/AC-1000 \\ Naim CD3 | Allo Digione Player
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Re: Rør, hvis du tør - Pathos Acoustics

Indlægaf kvik » 18. jan 2014, 21:35

Pathos Aurium (£1000)

Pathos Aurium.jpg
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Aurium headphone amp pure class A, tube pre stage and MOS-FET power stage, zero feedback, the Aurium performs what audiophiles are used to from Pathos: exquisite musicality, transparency, dynamics and total lack of listening fatigue. Flexibility is granted by the possibility to adjust output impedance from 16 to 1,000 Ohm, in order to provide a perfect interface with any kind of headphone. The volume control - a critical component in every amp - is operated by means of a high precision Burr-Brown device.

Key specs and features:
• Output power: 3,6W @ 16 Ohm, Class A zero feedback
• Output Impedance: < 0,5 Ohm
• Output level: 7V RMS max
• Frequency response: 10Hz - 80KHz
• THD: < 0,1 %
• Analog inputs: 1 stereo balanced XLR / 3 stereo unbalanced RCA line
• Analog outputs: 1 - XRL TAPE / 1 - RCA line TAPE
• Max inpult level: 6,4 V RMS unbalance / 3,2+3,2 V RMS balance
• Main voltage: 90-250 V 50 / 60 Hz
• Power consumption: 30 W
• Size: 200 x 230 x 60 mm
• Weight: 3 kg
• Available finishes: Silver; Black (w/red or black volume knob)

http://www.pathosacoustics.com/index.ph ... 45&lang=en



Pathos Classic Remix (£2400, HiDACevo+£575)

Pathos Classic Remix.jpg
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ClassicRemix, the new integrated amplifier of Pathos Acoustics, stems from the desire to make a deep renewal of the critically acclaimed and award-winning amplifier ClassicOne. The goal was high sonic performance, excellent management of the digital musical files, and high quality listening with headphones.

The result, then, is a hybrid device, Class A / B, with a fully balanced circuit and capable of providing a power of 70 + 70W (prudential). The preamp section has been realized around a pair of valves Electro Harmonix ECC88 - 6922 (double triodes) in a differential configuration, with the ability to adjust and store the listening volume of each input.

The digital demands are covered by a built-in high quality converter (DAC specially designed for ClassicRemix - optional) and a rich set of digital connections. HiDac is the result of significant know-how accumulated by Pathos in the design and implementation of digital converters for current and previous products. ClassicRemix is available without internal converter, or equipped with the current HiDac but at the same time it is ready to receive future technological developments (and new features) of digital boards that will be and on which Pathos Laboratories are already working.

For headphone listening Pathos from the planning stage on has set itself the goal to achieve a very high performance level comparable to that of a dedicated amplifier. Hence the choice to realize a real amplifier within the amplifier, with dedicated and strong power supply, a fully balanced circuit which exploits the signal coming from the valves preamplifier section of the ClassicRemix, which in turn ensures a low noise, a large range dynamic (120db) and a clean sound. Completing the picture a large bandwidth and a generous output power (greater than 2W of 32 Ohm) that allows easy and happy pairings with most of the high-quality headphones available.



Specifications:
• Type: Integrated stereo amplifier, fully balanced, Hybrid technology.
• Preamplifier stage: Tube (2x6922 ECC88)
• Final stage: solid state, bridge mode, class AB
• Output Power: [email protected] Ω (Both channel driven)
• Frequency response: 1,5Hz - 200KHz ± 0,5dB
• Max input voltage: 4,25VRMS
• Input sensitivity: 500mVRMS
• Input impedance: 47KOhm
• Output polarity: Non- inverting. Balanced pin 2 +
• Volume regulator: 2 x Burr Brown PGA2310 (180 steps 0,5dB)
• THD: 0,025% @ 70W
S/N Ratio: > 100dB
• Power requirements: [email protected] / [email protected] volume / < 0,[email protected]
• Analogue inputs: 1 balanced XRL line, 4 unbalanced RCA line
• Digital inputs: 1 USB port type "B", 1 SPDIF coaxial, 1 SPDIF optical, 1 Ethernet RJ45, 2 USB port type ”A”
• Outputs: 1 Pre out stereo line, 1 connector for jack headphone 6,3mm
• Dimensions (DWH): Amplifier 370 x 280 x 170 mm / Packed 490 x 430 x 300 mm
• Weight (net / packed): 14Kg / 17,5 Kg
• Available finishes: Matt black metallic; lacquered white, black or red; natural zebrano wood

HiDac Specifications :
• Sampling frequency: 44.1, 48, 88.2, 96, 176.4, 192kHz
• Resolution: 16 to 24 bits
• Minimal requirements: 1.3GHz CPU clock, 1GB RAM
• USB requirements: 2.0 USB port

Headpone Specifications :
• Output power: 1,6W @ 32 Ω
• Output impedance: 10 Ω
• Max output level: 10 V RMS
• Frequency response: 1,5Hz - 200KHz ± 0,5dB
• THD: 0,025%

http://www.pathosacoustics.com/index.ph ... 48&lang=en



Pathos InPol Ear (£3450, HIDACevo +£575)

Pathos InPol Ear.jpg
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InPol Ear is an integrated headphone amplifier in pure Class A, with a fully balanced latest generation double InPol. The twin match valve/headphone meets the highest quality of the sound, entrusted by the tubes with a low power demand, typical of the headphones. Listening by headphones through this amplifier means to start a journey to search for sound fullness conveyed by InPol, which also grants a great high-end extent and a strong nature, thanks to two balanced outputs (10 [email protected] 16 Ohm) and 1 unbalanced output (6 [email protected] 16 Ohm). Thanks to the (optional) HiDac EVO converter, music lovers who want the best from the latest digital sources - controlled via smartphone or tablet - will find their demands fully met.

InPol (Inseguitore Pompa Lineare - Linear Pump Follower) is a system patented by Pathos Acoustics which has enjoyed great success and won many awards. Inpol devices have a special sonic personality obtainable only by means of this particular circuit design - fully balanced in Class A using a single solid state component in follower configuration, with high current gain and with voltage gain together. The valve amplifier amplifies the input signal voltage and InPol supplies the current to drive the loudspeakers without any further amplification. In this way the signal is entrusted to the valves and becomes a true copy of the original, with all the quality, purity and harmonic content of the original. This technology allows an increase in the theoretical output in pure Class A of between 25% and 50% together with a low output impedance which is fundamental for the damping factor, and further improved by the double InPol.



• Output power: Impedance/Balanced/Unbalanced
32 Ω/3W/10W; 50 Ω/1,9W/6,4W; 120 Ω/800mW/2,7W; 300 Ω/320mW/1W; 600 Ω/160mW(533mW
• Output impedance: Balanced 0,9 Ohm, Unbalanced 0,45 Ohm
• Frequency response: 2Hz – 200KHz ± 0.5db
• Input sensitivity: 2,2 VRMS
• Input impedance: 100KOhm
• Output polarity: Selectable by remote control
• Volume regulator: 2 x Burr Brown PGA2310 (180 steps 0,5dB)
• THD: 0,1% @ 11W
• S/N Ratio: > 100dB
• Max input voltage: 4,4VRMS
• Max output voltage: Balanced 20VRMS, Unbalanced 10VRMS
• Analog inputs: 1 Balanced XRL line, 4 unbalanced RCA line
• Digital inputs: Installation of (optional) HiDac EVO board is required to enable these inputs
1 USB port type“B”, 1 SPDIF coaxial, 1 SPDIF optical, 1 Ethernet RJ45, 2 USB port type “A”
• Outputs:
1 Pre out stereo line RCA (pre-output phase can be selected), 1 Pre out stereo line Balanced XLR,
1 Connector for jack headphone 6,3mm, 2 Connector for 4 pin XRL
• Power consumption: 110W
• Dimensions: Amplifier 370mm (D) x 280mm (W) x 180mm (H)
• Weight: 12,5Kg

http://www.pathosacoustics.com/index.ph ... 03&lang=en
http://www.vickershifi.com/products/pai ... -amplifier



Pathos InPol Remix mkII (£3550, HiDACevo +£575)

Pathos InPol Remix mkII.jpg
Pathos InPol Remix mkII.jpg (282.54 KiB) Vist 16502 gange

InPolRemix MkII is a fully-balanced pure Class A integrated amplifier using the latest generation double-InPol circuitry. The digital bias/gain set technology with intelligent control is entrusted to the same microprocessor which regulates the volume, thus guaranteeing the performance of the amplifier itself and its ability to drive the loudspeakers efficiently. Thanks to the (optional) HiDac EVO converter, music lovers who want the best from the latest digital sources - controlled via smartphone or tablet - will find their demands fully met.

InPol (Inseguitore Pompa Lineare - Linear Pump Follower) is a system patented by Pathos Acoustics which has enjoyed great success and won many awards. Inpol devices have a special sonic personality obtainable only by means of this particular circuit design - fully balanced in Class A using a single solid state component in follower configuration, with high current gain and with voltage gain together. The valve amplifier amplifies the input signal voltage and InPol supplies the current to drive the loudspeakers without any further amplification. In this way the signal is entrusted to the valves and becomes a true copy of the original, with all the quality, purity and harmonic content of the original. This technology allows an increase in the theoretical output in pure Class A of between 25% and 50% together with a low output impedance which is fundamental for the damping factor, and further improved by the double InPol.


SPECIFICATIONS
• Output poweR: 2 x [email protected] 8 Ohm, 2 x [email protected] 4 Ohm
• Frequency response: 2Hz – 150KHz ± 0.5db
• Input sensitivity: 470mVRMS
• Input impedance: 47KOhm
• Output polarity: Selectable by remote control
• Volume regulator: 2 x Burr Brown PGA2310 (180 steps 0,5dB)
• THD: 0,1% @ 25W
• S/N Ratio: > 100dB
• Gain: 31 db Unbalanced 37 db Balanced
• Output impedance: 0,9Ω

CONNECTIONS
• Analogue inputs: 1 Balanced XRL line, 4 unbalanced RCA line
• Digital inputs: Installation of (optional) HiDac EVO board is required to enable these inputs
1 USB port type “B”, 1 SPDIF coaxial, 1 SPDIF optical, 1 Ethernet RJ45, 2 USB port type “A”
• Outputs: 1 Pre out stereo line RCA, 1 Pre out stereo line Balanced XLR (Pre-output phase can be selected),
1 connector for jack headphone 6,3mm

HEADPHONE SPECIFICATIONS
• Output power: 2,65W @ 32 Ω
• Output impedance: 0,45Ω
• Max output level: 9,6 VRMS
• Frequency response: 2Hz - 400KHz ± 0,5db
• THD: 0,025%

DIMENSIONS
• Amplifier: 370mm (D) x 280mm (W) x 180mm (H)
• Weight: 13,5Kg

http://www.pathosacoustics.com/index.ph ... 49&lang=en
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Re: Rør, hvis du tør - EternalArts

Indlægaf kvik » 18. jan 2014, 23:13

EternalArts Basic Line / Professional / KHV (€1750/2450/2750)

EternalArts Basic Line.jpg
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EternalArts Professional.jpg
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EternalArts KHV.jpg
EternalArts KHV.jpg (158.89 KiB) Vist 16502 gange

The amplifier family - KHV, Professional and Basic Line - was developed and optimized on the high-end headphones SENNHEISER HD800. After the first tests with a variety of low-impedance headphones it appeared that with a tiny modification an equally outstanding interaction with other types was given. Consequently a new board was designed for the unmodified circuit, which received a small switch with the optimal setting for low-and high-impedance headphones to be made ​​from the outside. You recognize the new board by the blue EPCOS film capacitors in the cathode outlet.

The Basic Line design has a total of 2 tubes, and the Professional and KHV designs a total of 4 tubes — 2 triode pentode for Basic Line and in addition 2 stabilizer tubes* for Professional and KHV for gain-independent stable anode voltages of the amplifier tubes. As with the other OTL amplifiers of the house also a board-supported design with gold-plated tracks laminated on both sides of 70μ was selected. Along comes a grouted TRANSTEC voltage transformer used in toroidal winding and protection technology with Mu-metal shielding. Only high quality matched components, including a classic RUWIDO-Poti in cast aluminum housing (first series) and the legendary blue ALPS potentiometer were used. Gold-plated headphone jacks and gold-plated Neutrik RCA jacks complete the equipment. The circuit is absolutely secure and stable for maximum safety and very high tube life. All in all, a phenomenal transmission bandwidth and pulse sequence was reached.


• Construction: OTL-amplifier, board-supported, 70μ gilded double laminated boards
• Tube Placement: 14GW8 (PCL86) per channel, KHV and Professional additionally STV108/30 per channel
• Input Resistance: 25 / 50 kOhm
• Output Impedance: 300 ohms / > 20 ohms
• Frequency Response: 10 - 375.000 Hz - 0,3 dB
• Distortion Factor (THD): (1 kHz, 400mVs) < 0,5%
• SNR: 80 dB

http://www.audioclassica.de/de/eternala ... -line.html
http://www.audioclassica.de/de/eternala ... ional.html
http://www.audioclassica.de/de/eternala ... r-khv.html


EternalArts HLP (€2950)

EternalArts HLP.jpg
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High-end pre-amplifier and headphone amplifier.

Special features
• Compact preamp module for connection of three high level sources and a HiFi headphone realized brushed nickel feet rotated full metal and volume knob in the two-part powder-coated sheet-steel housing with high gloss black acrylic front, massive,
• On high-impedance high-end headphones like the HD800 Sennheiser optimizes headphone section
• Switchable to operation with low-ohmic Headphones > 20 ohms
• Circuit design with a total of 4 tubes: 2 triode pentode, 2 stabilizer tube to gain independent stable anode voltages the amplifier tubes
• PCB-based design with gold-plated,-70µ on both sides laminated traces
• Encapsulated much voltage transformer in toroidal system with protective winding between primary and secondary winding package, Mu metal shielding between PCB and transformer
• High-quality selected components. Classic ALPS potentiometer, gold-plated headphone connector, gold plated Neutrik RCA, relay-controlled switching of sources
• Multi-secured, absolutely stable circuit for maximum reliability and very long tube life
• Phenomenal transmission band width and pulse sequence
• Made in Germany

Technical data
• Construction: OTL line level preamplifier HLP, platinengestützt with gold-plated, 70μ double laminated boards
• Tube Assembly: OTL tube amp with 2 x 14GW8, 2 x STV108/30 / 6074 Haltron
• Input resistance: 50 kOhm
• Output impedance: Preamp: 300 ohms / Headphones: > 20 ohms / > 300 OHM selectable
• Frequency response: 6 Hz - 40.000 Hz +-0.5 dB
• THD (1 kHz, 400mVs): ≤ 0.4%
• Noise ratio: > 80 dB

http://audioclassica.de/de/node/307.html



EternalArts Twin Type Professional ($2650)

EternalArts TTP.jpg
EternalArts TTP.jpg (1.44 MiB) Vist 4896 gange

Tube Headphone Amplifier OTL for balanced and unbalanced sources and connectors for balanced and unbalanced headphones

The EternalArts TTP is the ‘universal soldier’ for both, balanced source and unbalanced signal. It allows to switch between the two inputs by relais and offers connectivity for headphones in balanced and unbalanced circuitry in parallel.


Features
• Compact amplifier unit with connection for two high impedance premium headphones housed in a two piece powder coated steel /aluminium case with a high gloss acrylic front plate, sorbothane feet and nickel plated solid metal volume control knob
• Developed and optimized with high impedance headphones like the Sennheiser HD800 and the Beyerdynamic T1
• Balanced inputs with selected EternalArts input-transducers 2:1 for high studio levels and extreme overload-stability or 1:1 for audiophile equipment
• Circuit with 4 tubes: 2 triode-pentodes and 2 stabilizing tubes for a stable plate voltage independent of amplification
• Designed with 70μ dual-sided gold-plated circuit boards
• High grade TRANSTEC multi voltage transformer in toroidal design with permalloy shielding
• Superior selected components, blue ALPS potentiometer, gold-plated headphone connectors and Neutrik cinch sockets
• Foil shielded EternalArts high end power cable
• Multiple protected, perfectly stable circuit for ultimate safety and high tube life cycle
• Phenomenal frequency range and impulse response
• Entirely made in Germany

Specifications

• Tube complement: 14GW8 / PCL86 each channel

• Power supply: Haltron 6074 / 0B2-WA each channel
• Input impedance: 4 Kohms
• 
Headphone impedance: 300 / > 30 ohms

• Frequency range (- 2.5 dB): 10 - 150.000 Hz
• 
Signal-to-noise (related to 1V): > 80 dB
• 
THD (1 KHz, 400 mVs, 300 ohms): < 0.35%
• 
Idle run stability: Permanent
• 
Short circuit stability: Short period
Ambient temperature usage: 10 to 45° C

• Ambient humidity usage: 20 to 80%

• Construction Material: Black high gloss powder coated steel casing with aluminium hood, High gloss black acrylic front plate, nickel-plated full metal knob
• Ancillaries: Foil shielded high end power cable

• Voltage: 115 / 230 V ~ 50 / 60 Hz
• 
Power usage: 30 VA
• 
Dimensions: 13.5 (W) x 11 (H) x 33.5 cm (D)
• 
Weight: 2.9 kg net
• Warranty: 3 years

https://www.ebay.com/itm/EternalArts-TT ... SwKOJYJ2x1
https://www.hifistatement.net/feuilleto ... ererlebnis
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Re: Rør, hvis du tør - RudiStor Sound Systems

Indlægaf kvik » 19. jan 2014, 12:07

RudiStor RP8K-VT (€4050)

RudiStor RP8K-VT.png
RudiStor RP8K-VT.png (461.94 KiB) Vist 16502 gange

This is something really new, although as an E-OTL it take advantages from our long experience in this kind of design topology, starting from the 2005 made RP4 up to now. In the years many thing are changed and we refined our design, this time we also made some really innovative solutions without go far from our tradition.

And for what we believe to be the best E-OTL you can dream, we have designed the best possible case. A minimalist look made from a single block of aluminum CNC engraved make the case a solid and fascinating unibody, with many advantage not only from look but even in general quality mechanical and electronics. No vibrations, heavy shield from external EM interference and great heating dissipation, are some of them. When assembled the RP8K-VT is like a solid metal brick.

From the VT input stage to power SS there are no coupling capacitor, this eliminate a contaminating component, and assure a transfer of signal in the best and less contaminated way. IF we consider the direct coupling plus the total absence of negative feed-back (a circuital solution that make easy the design and tuning but introduce negative effects like artifact and impurity at medium to high frequencies) then you can understand our great attention to sound quality.

How a relatively simple electronic circuit, like in 8K, we was able to obtain so great performances?
Simple: we try to make always the circuits as simple as possible near to the theoretical ideal circuit design. Less manipulation to sound, and better is the result. This in the real world is not always simple to obtain and the manufacturers prefer adopt solutions (like feed back or coupling capacitors between stages) that make life simple.
Our solution is : to make the circuit as simple as possible, and reach the high performance by an accurate design and an obsessive selection of components.


Specifications
• Technology: Hybrid 4 x DoubleTubes (16 triode sections) and biploar Transistors
• Class of working:
• Power Supply: Transfrormer plus double capacitance multiplier PSU and 2 RC filter
• Maximum Output swing (Vpp): 19 Vpp
• Bandwith at +/- < 0.05 dB: 2 Hz to 100 Khz
• THD at (3Vpp~1Vrms, 1 KHz, 32 Ω): 0,10%
• Output impedance (on headphone jack): 16 ohm to infinite
• Input impedance: 22khm-47Khm
• Slew Rate: 0,11V/uSec
• Max Gain: 12 dB
• S/N weighted "A" at 20Cent. After 30': -120 dB
• Construction material: Unibody, single block of avional engraved
• Size: Large, Deep, High (mm): 240.0 - 300.0 - 112.0
• Weight (Kg): 8,0
• Operating voltage: 100 to 240 must be specified on order
• Consumption A: 85 VA
• In line from: 2015
• N° of Input: 1 pair RCA
• N° of Output (line signal): 1 pair RCA
• N° of headphone output (Jack 6.5 mm): 1

http://www.rudistor.com/headphone-amplifiers/rp8k-vt
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Re: Rør, hvis du tør - Triode Lab

Indlægaf kvik » 19. jan 2014, 19:29

Triode Lab EL84 SET-FFX ($2500)

Triode Lab EL84 SET-FFX.png
Triode Lab EL84 SET-FFX.png (1.8 MiB) Vist 4853 gange

Finale Audio F108/128/F138 was officially discontinued 2019. The new EL84 SET-FFX will be the successor and the only Single Ended EL84 / 6BQ5 amplifier from Finale Audio/Triode Lab.

We mastered one little EL84 in SE mode almost 40 years ago. Have we stop making it due to high cost? No - we still make it for our EL84 fanatics, in modern high end standards (most tube circuits out there are from the old days with narrow bandwidth, and not very refined - it’s not a coincident some amps never had highs , or the noise floor is higher than usual , because its just another copy from the past). Each EL84 SET-FFX is one of a kind, made to your order. And here is the “TRIODE LAB” no hold barrette version of this tube in SE configurations - you can’t find the same voice and character else where. These exotic Hashimoto (Sansui) Transformers from Tokyo are the finest type HIFI transformers and are expensive. There is not another manufacture can afford to do this , we simply want the best or nothing! Because even we have the ultimate and finest circuit designs , without the finest transformers will not unleash its full potential. And these legendary Hashimoto transformers are proven on Sansui amps that be lasting forever.


• HASHIMOTO Japan Output Transformers Specific for EL84 / 6BQ5 type tubes
• HASHIMOTO Japan Power Transformer
• HAMMONDS Canada Choke Transformer (Can be upgrade to HASHIMOTO chokes)
• CMC or CARDAS USA Gold Binding Posts 0-8 Ohms (4/16 Ohms Extra)
• FURUTECH Japan Gold AC Inlet
• FINALE Canada “Pink-Lingu” Rose-Gold Plated RCA Jacks
• Alps Blue or TKD “Stepped” Upgraded Volume Pot
• MUNDORF GERMANY Evo Oil Coupling Caps
• QQQ Japan Rectifier Tube Socket
• Output Power : 1.5 Watts in Triode Mode or Pentode mode over 6W (default)
• Operation : Class A Autobias
• Size : 17 in x 10 in x 3 in
• Special Note : Other than our typical FFX treatments , this might be the only SE-EL84 amp on the market uses regulated power supply to feed the amp. And in the past , our record measurement in such configuration WITHOUT regulated power supply is quiet enough at 100 db - which reads quieter than many solid state amps. Now, it will only be better , quieter , and the tubes and sound are always at its optimal working point - the tubes will last longer and more evenly too, as they see same voltages. No body will do that far and spend that much time / money and effort for such simple-amp design , but we will!
• Optional : Headphone Out @ 16 ohm with remaining 4 and 8 ohms to speaker binding posts / Volume Control. Perfect for planar headphones such as Audeze, plenty of drive and very quiet!
• Finish - Pick a colour you like from our 9 factory colours , and it will be housed in a Canadian Walnut wood frame chassis
• $2,500 USD - Making it our most affordable tube amp that wears the Triode Lab name!

http://www.triodelab.com/reserve (scroll down, 2nd unit)
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Re: Rør, hvis du tør - PrimaLuna

Indlægaf kvik » 19. jan 2014, 20:10

PrimaLuna DiaLogue Premium HP Integrated Amplifier ($4400)

PrimaLuna DiaLogue HP Integrated.jpg
PrimaLuna DiaLogue HP Integrated.jpg (194.8 KiB) Vist 9559 gange

The Finest Tube Integrated Amp you can buy without regard to cost that also shames purpose-built headphone amps costing thousands.


Features

• Heaphone amplifier - One of the best headphone amps in the world. And the only amp that lets you listen with either the warmth of Triode or the wide-bandwidth of Ultra-linear operation at the push of a button! Most tube integrated amps and preamps use a solid state op-amp chip for running headphones. Stand alone tube headphone amps will vary in quality like any other tube amp. Headphones are simply small speakers that require less power. Some amps will use smaller output tubes that groan to have enough dissipation to run power-hungry planar headphones. Other brands, including those costing $5,000 or more like Mal Valve, will use larger output tubes, then use a voltage divider network to drop the power down to an acceptable level for headphones. This is how PrimaLuna designed the HP. We simply took advantage of the fact that this is the best tube integrated amplifier. Now you don't have to pay for a separate state of the art headphone amp. The HP is the favorite of owners who use everything from Audeze to Hifiman to Sennheiser!

• Remote controlled Triode/Ultra-Linear Switching - Do you have some classic rock albums you used to love so much that have now ended up left on the shelf, un-played for years? How about jazz or classical recordings from the 60’s? Every audiophile has albums that they used to play, but stopped because they are harsh, brittle, or bright. There is a solution.
Triode and Single Ended Triode (SET) amps are popular for their warmer, fuller, and easy to settle into sound. But triode amps have limitations! Ultra-linear has more extension on the top and bottom, not to mention greater power. They have greater “pop” with a bigger difference between light and dark, and loud and soft. Having triode only is VERY limiting.
The best option is to have both triode and ultra-linear. PrimaLuna engineers in Holland designed an ingenious circuit that lets you change from triode to ultra-linear with a push of a button on the supplied remote control. No need to get up and stop the music. Make an instant comparison while you listen and choose what you like best for that song or album.

• AC Offset Killer - DiaLogue Premium is about goose bumps. The ones you get when music comes out of a background so quiet, you may say to yourself “Just how is this possible?” PrimaLuna custom-winds our own massive toroidal power transformers that are low in hum and EMI. But we wanted more. Our engineers designed the AC Offset Killer to lower transformer noise to a place no other manufacturer dreams of going, regardless of how bad your electricity is. The result? Sense of space. Texture. The resonance of an acoustic guitar or violin string that seems to trail on forever. The AC Offset Killer will amaze you.

• Point-to-point wiring w/Swiss made wire - You spend a lot of money on interconnects. So why have the signal go right from the RCA jacks or speaker terminals into circuit boards with copper traces so thin you can hardly see them? What’s high-end about that?
PrimaLuna employs Point to Point Wiring on all products. The entire signal path, including resistors and capacitors, is painstakingly hand wired with heavy-gauge cable by craftsman.
DiaLogue Premium models use Swiss-made, silver-plated, oxygen-free continuous crystal (OCC) copper with a Teflon dielectric in the critical signal path for superior signal speed and increased clarity.

• SuperQuiet Line Inputs - Input selector switches leak noise and signals from other sources, as they never turn off the other inputs completely. And, they deteriorate with age, requiring the use of cleaners. Many are mounted on the front panel requiring long runs of wires to the back panel inputs. These wires pick up stray noise from RF and EMI.
PrimaLuna has a better way. Instead of a switch, input selection is done using premium quality sealed relays mounted in the rear where you plug in your components. When an input is selected, that relay closes giving you the best connection possible. All the other relays are left open, so noise and signals from other sources can’t leak in. The signal path is now almost non-existent, so there are no wires to pick up noise.

• Adaptive AutoBias - What most companies call Auto Bias is actually "Cathode Bias"- A commonly used method that is cheap to make, and often found in guitar amps, but also $20,000 high end audio amps. It reduces the available power of the amp and runs the tubes hard, meaning shorter tube life and failures via "shorts".
PrimaLuna's Adaptive AutoBias is a true, smart technology employing an array of sensors to monitor tubes and make adjustments seamlessly in real time. More important, it is the ONLY circuit of its kind that is truly "adaptive" by addressing "tube pinch off" at higher volumes, therefore reducing distortion by over 50% and greatly extending tube life. Adaptive AutoBias is completely passive and NOT in the signal path. The result is low to no maintenance, long tube life, and the lowest possible distortion for amazing sound.
Adaptive AutoBias also provides unparalleled flexibility by allowing use of almost any tube on the market today. It even has a fine-tuning switch for EL-34 and KT88/KT120/KT150 tube types.

• Soft-start - Furthermore, the PrimaLuna Adaptive AutoBiasTM circuit is equipped with Soft-startTM, which powers the amplifier up slowly to prolong the life of internal components, including the tubes. This makes the PrimaLuna a joy to own and operate.

• Bad Tube Indicator - A small LED in front of each power tube lights up if the tube goes bad. The circuit then puts the amp into protection mode. With other brands, this may be when you have to break out the soldering iron to replace a plate resistor, and replace two or four tubes because your amp requires matched sets. With PrimaLuna, you just replace the bad tube (no matched tubes required), and turn the amp back on. No hassles, no headaches.

• ALPS Blue Velvet motorized volume control - tracks better so a defined stereo image is established and doesn't collapse as you raise and lower volume. And it will stay quiet, adhering to PrimaLuna's guiding principle of "Built to last a lifetime".

• TAKMAN Resistors - Easy to identify through their pink color, these premium resistors made in Japan are popular with those who rebuild and upgrade their gear. "Modders" love TAKMAN for their low noise and linearity.

• SCR Tinfoil Caps - Made in France, these capacitors are used in the critical signal paths and while they are expensive, the PrimaLuna team they could not be left out after careful listening comparisons with many different types.

• New front end design - using six 12AU7 tubes in total (3 per channel). The result is a wider, more linear bandwidth of the driver stage. The sound of the amp is much more dynamic, especially when music becomes complex. Bass control and the space between instruments improves greatly.

• Dedicated subwoofer output - If you're favorite sub only uses line-level inputs, such as the JL Audio subwoofers, the DiaLogue Premium Integrated makes it simple to use!

• Wide-Bandwidth Output Transformers - Output transformers are the most important part of any tube amp. They determine how low the bass will reach and how high the top end goes. 250 watts of power will have no top and bottom extension if the output transformers don't have the bandwidth. We use lower power to extend tube life, and bandwidth to give you slam. Transformers are the most expensive components in an amplifier, so manufacturers save money by using ‘off the shelf’ units available on the market. PrimaLuna output transformers are custom-designed, wound in-house, and massive. Our DiaLogue Class components feature the largest, widest-bandwidth output transformers we’ve ever made. One reason why no other brand sounds like a PrimaLuna.

• Custom Potted Toroidal Power Transformers - Power transformers generate two types of noise, magnetic and acoustic. That's why toroidal power transformers are used in the very best audio products. Compared to standard transformers, toroids radiate about 1/10 the magnetic field that pollutes music and obscures detail. Additionally, the absence of an air gap typically means toroids have an 8:1 reduction of acoustic noise. As transformers are the most expensive components in any audio product, manufacturers will even house cheaper C-core and EI-core transformers in an outboard power supply box with an umbilical cable rather than upgrade to an expensive toroid. The increased cost is significant, but PrimaLuna doesn’t cut corners. All PrimaLuna products use massive, potted toroidal transformers. PrimaLuna transformers are enclosed in a metal housing and then potted in a non-microphonic resin to further reduce noise and to protect the windings from moisture and deterioration forever.

• PTP-circuit - If the power transformer should overheat, this "Power Transformer Protection" circuit cuts primary power, allows the amp to cool down, then resets itself.

• OTP-circuit - The "Output Transformer Protection" circuit protects the output transformers in the event of a user error crossing speaker wires.

• +B relay - Replaces the plate fuse and works in conjunction with the OTP-circuit to protect the amp against tube failure. This method is less intrusive sonically and the relay resets itself once the faulty tube is replaced

• SmartWatts design for extended tube life - PrimaLuna's true-value, low stress design philosophy. Many manufacturers fudge on their power ratings, claiming power that is mathematically impossible. Every seasoned tube owners knows that 20 watts from a tube amp is a ton of power. What is really important is that PrimaLuna runs their power tubes up to 40% easier than other manufacturers. You can tell easily by putting your hand on top of a PrimaLuna amp. They run cooler than others. There is no reason to run tubes at their jagged edge. Why do manufactures do it?


Specifications
• Output Power - Ultra-linear (8 Ohms, 1% THD): 2x 70W (EL34), 73W (KT88), 89W (KT120), 96W (KT150)
• Output Power - Triode (8 Ohms, 1% THD): 2x 40W (EL34), 42W (KT88), 51W (KT120), 54 W (KT150)
• Inputs: 5 Pair RCA + 1 Pair HT bypass
• Outputs: 4 & 8 Ohm + RCA Subwoofer Out + 1/4" Headphone jack
• Headphone Out: 11.4 W (32 Ω, 1% THD), 6.56 W (64 Ω, 0.70% THD), 3.05 W (150 Ω, 0.60% THD), 1.58 W (300 Ω, 0.60% THD), 0.82 W (600 Ω, 0.60% THD
• Freq. Response (+/- 1dB): 7Hz-65kHz (EL34), 7Hz-70kHz (KT88), 7Hz-75kHz (KT120 & KT150)
• THD (1W/1kHz): 0.1% (EL34)
• S/N Ratio: 92 dB (EL34 & KT88), 93 dB (KT120 & KT150)
• Input Sensitivity: 320mV ((EL34 & KT88), 360mV (KT120 & KT150)
• Input Impedance: 100k Ohm
• Power Consumption: 255 watts
• Standard Tube Compliment: 6 - 12AU7, 8 - EL34
• Dimensions (WxHxD): 15.2" x 8" x 15.9"
• Weight: 63.8 lbs


https://www.primaluna-usa.com/dialogue- ... integrated
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Re: Rør, hvis du tør - T Art Audio

Indlægaf kvik » 19. jan 2014, 20:38

T Art Audio Apis (€890)

T Art Audio Apis.jpg
T Art Audio Apis.jpg (434.96 KiB) Vist 16502 gange

The Apis is a headphone amplifier suitable to drive low impedance headphones from 32 Ohm upwards, with a good output power, about 500 mW, and with a wide bandwidth, 10-100000 Herz.

The circuitry includes a dual triode input, one per channel, preamp section, and a double triode in parallel output, ECC88, Tesla, or other. Signal capacitors are Mundorf.

The cabinet is made of Corian with inserts in 2mm aluminium.

It's a great headphone amp with the characteristic sound of valves, good bass, very present and controlled, excellent midrange, silky highs.

The price includes postage and packing in wooden crate. Guarantee satisfied or refunded. Lifetime warranty. Custom payments options.



http://www.valvolekit.it/apis.html
http://www.ebay.it/sch/linobugli/m.html ... pg=&_from=
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Re: Rør, hvis du tør - Zesto Audio

Indlægaf kvik » 19. jan 2014, 20:43

NOTE: Leto 1.5 (with headphone output) appears to have been superseded by Leto Ultra (without headphones output) in 2019. As Zeto 1.5 still appears to be available, it will be left in for now.



Zesto Leto 1.5 Preamplifier ($7500)

Zesto Leto 1.5 Preamplifier.jpg
Zesto Leto 1.5 Preamplifier.jpg (234.21 KiB) Vist 9558 gange

Basics Rule - My design philosophy is to focus only on the important components and add nothing that could compromise the signal path. The only active components are the vacuum tubes that create a warm musical sound.

Balanced Means Lower Noise - As a longtime audio engineer and producer, I’ve worked with a lot of professional equipment. I always preferred “true floating balanced” inputs and outputs because of their foolproof ability to isolate one piece of gear from the next.
And that means lower noise for a strong, clean and quiet signal.

Easy to Use - The Leto preamp will compliment most systems: tube, solid state or digital. It will work with single-ended and balanced input source or power amplifier combinations.

Focus on the Music - With the Leto in your system it will allow the sonic detail to come through, so you focus is on the music and the hardware will seem to disappear.

What is Leto? - In Greek mythology, Leto is the mother of Apollo.



Key Features

• NEW now with built in headphone amplifier you can connect your favorite headphones to the Leto without any additional equipment.
• Setting the volume control to “Theater” you can now use your 2 channel system as part of your surround sound eliminating the extra equipment.
• Plenty of volume to handle all your source material .
• The input selection uses only electromechanical switching to provide the most musical detail.
• The wide frequency response allows you to hear the finest passages in your music.
• True floating transformer balanced Inputs and Outputs have lower noise and isolate one piece of gear to the next.
• Left and Right ground switches allows you to control the grounding of the single ended outputs.
• The output transformers provide a strong and clean signal to your power amplifier.
• Recessed RCA and XLR connectors are high quality, Gold plated, with an isolated ground.
• All connectors are durable and will hold up to the typical Audiophile who loves to change their configuration.
• No pops when the unit is turned on or off.
• Automatically goes to mute when turned on or off.
• Remote control Volume, Mute and Mono
• The remote Mono helps you to trouble shoot your system.
• Remote bypass switch overrides the mute in case the remote is misplaced.
• 50 hour factory burn in on all circuits and vacuum tubes.
• Elegantly designed 16 gauge zinc plated steel enclosure to help isolate the electronic “chatter” from nearby equipment.
• On/Off power switch conveniently mounted on front side panel.
• Each unit is hand built “Made in the USA”.


Specifications

Inputs
• 5 Inputs
• 3 sets of Single Ended inputs with an impedance of 100K Ohms
• 2 sets of true Balanced transformer inputs (pin 2 hot) with an impedance of 10K Ohms
• Maximum peak input level of 5 Volts RMS

Outputs
• NEW 1/4 TRS inch headphone jack
• 4 Line outputs
• 2 sets of true Balanced transformer outputs (pin 2 hot) with an impedance 150 Ohms
• 2 sets of Single Ended outputs with an impedance 150 Ohms
• Maximum peak output level of 10Volts RMS +20dB
• Independent ground lift switches on the left and right Single Ended outputs
• 1 set of Single Ended Cinema bypass outputs from input #1

Detailed Specifications
• NEW unity gain volume indicator for home theater surround sound integration.
• Frequency response 10Hz to 50Khz ~ 1dB
• Distortion ~ 0.02% at 1V RMS input
• Gain 12dB
• Signal to noise ~ 100dB below operating level
• Non inverting output polarity
• Cross talk >90dB
• Front panel adjustable balance control
• Remote control volume, mute and mono
• Remote bypass switch on rear panel (just in case the remote is misplaced)
• 1% metal film resisters throughout
• Polypropylene capacitors throughout the audio path

Power
• Power consumption 27W, 0 drain when off
• Voltage 110/120V AC 60Hz
• Optional factory installed 220V or 230/240V AC 50/60Hz
• Standard 3 pin IEC power connector
• ON/OFF power switch conveniently located on the side panel
• Two internal high quality linear regulated power supplies, 250V and 12V

Vacuum Tubes
• Two (2) Gold pin JJ ECC83S/12AX7
• Two (2) Gold pin JJ ECC82/12AU7
• High quality gold pin ceramic sockets

Other Features
• Each unit is hand made in the USA
• 50 hour factory burn in on all circuits and vacuum tubes
• Dimensions 17” W X 12” D X 5” H
• Weight 23 lbs.
• 16 gauge zinc plated steel enclosure
• Two year limited warranty
• Six months warranty on Vacuum Tubes
• Recessed RCA and XLR connectors are Gold plated with an isolated ground.
• All switches and knobs are easily accessible, nothing hidden inside to adjust.


https://www.zestoaudio.com/leto-1-5-vac ... amplifier/
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Re: Rør, hvis du tør - Phatlab Audio

Indlægaf kvik » 19. jan 2014, 20:47

Phatlab Phantom ($4220)

Phatlab Phantom.jpg
Phatlab Phantom.jpg (213.22 KiB) Vist 14205 gange

Build a fully balanced tube amplifier from ground up
There is nothing like Phantom from design concept to practical implementation. Apart from our portable products, Phantom gains the benefit of unlimited power supply and spacious enclosure to include whatever ideally suited audio performance. The first idea came to our mind is a full-balanced topology. Not catering to market hype for balanced amplifier, but to leverage the advantage of balanced topology leading to ultimate sound quality. Instead of a balanced to single-ended conversion at input and a single-ended to balanced conversion at output, we apply a much tedious and costly four-amplifier scheme for a true balanced stereo amplifiers. The decision follows by many design challenges when we determined to make it as ideally as we planned.

A high precision 4-channel volume control
The first challenge is how to make a 4-channel volume control with minimum tolerance. In a single-ended counterpart, a two-channel volume potentiometer with 10% tolerance is widely accepted, even though we usually found imbalance at low volume level between channels. However, using a 4-gang potentiometer in a balanced design, the huge tolerance may easily deteriorate the advantage we gain from balanced topology. One simple fact is the common mode rejection is seriously degraded by as much as the tolerance between gangs.
We use R-2R resistor ladders as volume control unit for zero tolerance between channels. The signal path is true analog with digital interface, so there is no signal imbalance among them. And the user interface is thoughtfully maintained the analog touch. The volume control is almost zero tolerance, high resolution even at lowest volume level and intuitive as traditional potentiometer.

Solid Chassis and Suspended Tubes Module
We have gained many experiences from portable amplifiers and well aware of the vulnerability of directly-heated tube (DHT) to vibration. By leveraging the luxury of enclosure space. There are several directions to stabilize the chassis and isolate vibration from tubes. One is an extremely solid and heft enclosure, though an 10kg+ chassis may beyond anyone's expectation for a headphone amp. And second is independently suspended tube module. Through delicate mechanical design, the chassis is not just heavy but also as solid as machined from a single metallic brick. Every plate is machined from 10mm solid aluminum and faceplate is over 20mm. Four especially design pillars are used to support tube sub-assembly and dedicated springs are inserted to further dampen the minimal vibration. The chassis of Phantom is solid as a tank and gentle as a cradle.

The Heart of Phantom, 3Q4 (DL95) Directly Heated Tube
With all the dramatic progress, there is one thing we did not change. We adopted a directly heated tube – 3Q4 in Phantom. We are true believer in directly heated tube for their sensational audio performance of intimacy and lifelike sound stage more than none-filament type valves. Phantom with triode-connected 3Q4 immediately warms up into working condition, though it takes tens of minutes for optimum sound quality.

High Fidelity Output Transformers
We are proud to say the single-ended output has equivalent performance as balanced output by leveraging output transformers in Phantom. There are many praises about Phantasy's audio quality and most are originated from its premium output transformers. Without exception, Phantom is integrated with high quality output transformers. Thanks to the roomy enclosure, we have plenty space to house high power iron cores without compromise. The model used in Phantom is newly developed especially for its output stages and driven by two amplifiers in a push-pull style to minimize distortion and noise.
The output transformer is the last mile in delivering music energy to headphone. The bandwidth, dynamics, distortion, and maximum output power are limited by this iron core. No matter how well active circuitry performs, an inferior transformer will choke them all. A dual secondary coils are wisdom borrowed from PHAntasy to adapt to wide variation of headphone impedance.

Simple and Elegant
Phantom has followed Phatlab's highly regarded tradition – Simplicity. No matter how sophisticated internal architecture is, it is presented to user with a simple and intuitive interface through elegant and professional industrial design. Though the construction and component counts are many times of its portable predecessors. Phantom is strictly binding to principle of shortest signal path. From input buffer, volume control, up to power amplifiers, there is only one voltage gain stage. This is the only way to minimize internal generated noise. There is hardly a trace of hiss even paired with most sensitive headphones.
Critical music signals and outputs are routed through mechanical relays for highest purity. The relays used in Phantom is especially selected latch-type that means relay's coil does not consume current after switching. Without the coil current, we avoid the electrical field next to signal path. Though a latch-type relay needs much more complex control circuits, it is our exhausted efforts to minimize interference.

Luxury Power Supply
Starting from portable devices, power supply is always a high priority on our design approach. Thanks to the desktop setting, we have plenty of luxury on power block. The power transformer is rated over 80VA and built with top-rated iron core. Running at pure class-A, Phantom is consuming most power after power on. The quality is assured by its slightly warm even after days of operation.
There are 6 regulated power rails specific for each function block ranging from input buffer, volume control, digital control, filament supply, and B+ high voltage.

Awesome ID and Mechanism
Phantom is another masterpiece designed by highly regarded ID and mechanical professionals. The enclosure ingeniously interlock through invisible tenons and notches is as solid as machined from a single brick to ensure best rigidity and precision. The marking is laser trimmed on. There is nothing shaky or loose. It is designed to last from ground up.

Overwhelming and Immersive
The listening experience is overwhelming and immersive. It is ultimately transparent with a warm touch. It drives headphone effortlessly and extends bandwidth well down to lowest octave and up to highest harmonics. The beloved music is presented with a familiar yet whole new face, they've rarely heard as natural or life-like as with Phantom



Features
• Fully balanced pure class-A operation
• Zero tolerance, high precision, and lowest distortion volume control
• Selected and matched directly heated vacuum tubes
• Chassis integrated tube suspension to minimize microphonics
• High power wide bandwidth output transformers with multiple secondary windings
• High capacity low noise power transformer
• Military and audio grade passive components
• High-quality PCB (2.4mm base) and extra thick copper layers
• Output impedance switch for appropriate headphone damping
• High/Low gain switch
• Balanced and single-ended headphone output
• Balanced and single-ended line input

Specifications
• Frequency Response: 5 Hz – 50 kHz (-3dB)
• Output power: 2000 mW + 2000 mW (30 ohm)
• Headphone impedance: 16 ohm – 600 ohm
• Max. Input Voltage: 2V(RMS)
• Inputs: 1 x RCA; 1 x XLR
• Outputs: 1 x 1/4" TRS; 1 x 4-PIN XLR
• Power supply: AC 115/230
• Dimensions: 275 mm x 405 mm x 170 mm
• Net weight: 12 Kg



Phatlab Phantasy II ($1725)

Phatlab Phantasy II.jpg
Phatlab Phantasy II.jpg (204.24 KiB) Vist 4659 gange

A PHAntasy Evolves to New Level of Performance
We proudly introduce PHAntasy II, the evolutionary version of original PHAntasy that is renowned for its unprecedentedly sensational sound quality in a portable chassis. Its novel single-ended topology and unique permalloy output transformers are crown jewels inside. Through innovation of PHAntasy, we have created generations of products with individual characteristics and advanced in amplifier technology. PHAntasy II is a fruitful achievement after years of development to preserve all the beauty of PHAntasy while meeting the expectation of audiophile society and progress in audio technology. PHAntasy II delivers more robust power and low level resolution without losing the touching tonality of directly heated triode. PHAntasy II is another masterpiece binding the tradition of Phatlab Audio to provide rich harmonics and full-bodied sound. Its achievement is easily manifested from the first note of music playback.

4.4mm balanced phone jack
For tens of years, the specification of phone jack is steady, though there are proprietary terminals used by some manufacturers for balanced output. There is never a de-facto and reliable standard well accepted by the industry. Until the 4.4mm jack is released, we see a promising physical implementation that is reliable enough and well accepted as next generation phone jack. By applying the new balanced jack, PHAntasy can serve headphones with quality cable and minimum contact resistance to ensure robust output quality. In addition to 4.4mm balanced jack, a legacy 3.5mm single-ended output is provided for best convenience. While user is advised to use only one of the outputs at a time, it is to ensure the proper loading impedance in single-ended topology.

Improved Nickel core output transformers
It is well known that output transformer is the spirit of single-ended amplifier. However, there are challenges to design transformers for small portable chassis. For example, the high wiring resistance is one of biggest challenges. The resistance is in series with headphone and consumes output power. It lowers the effective power into headphone. In PHAntasy II, we struggle to increase the wire gauge and reduce over 20% in-series resistance.

Double the capacity of power reservoir
We are not talking about the battery capacity because 8-hour operation time is satisfactory to most users. It is the immediate capacitance right before amplifier's high rail. It is critical to have plenty of power capacity for a class-A amplifier. In PHAntasy II, we rearrange the components placement to increase the board space for housing more capacitance and revisit physical PCB layout to further minimize impedance and increase effective capacitance.

Super linear circuitry
The sensational performance of vacuum tube might be rooted in its higher 2nd harmonics output, while excessive mix-up of harmonics from different stages will muddy the sound. By leveraging the development of Phantom, we are aware of the lower distortion from surrounding circuitry will faithfully preserve the resolution and liveliness of music without losing the magic of tube sound. By applying the same super linear topology, the performance of PHAntasy II is manifested in its purer music presentation.

Summary
There is always a question on how to compare PHAntasy II with original one in every aspect. The truth is we have done our best to improve PHAntasy II's performance physically. But audio playback is always more than engineering or physical superiority, it takes human touch and sense to be sensational. The faster transient response and more powerful punch in PHAntasy II might compromise a little bit in tenderness. PHAntasy II is nonetheless inherits the tradition of Phatlab Audio. It is easily manifested itself in the first tone in audition.


New features
4.4mm balanced and 3.5mm SE outputs
Improved output transformers
Double capacity power reservoir
Super linear circuitry

Specifications
Frequency Response: 30 Hz – 40 kHz (-3dB) / 10 Hz – 60 kHz (-6dB)
Output power: 250 mW + 250 mW (300 ohm) / 220 mW + 220 mW (75 ohm)
Headphone impedance: 30 ohm – 600 ohm / 60 ohm – 600 ohm (recommended)
Power supply: 5V/1A via micro B USB port
Operation time (on battery): Approx. 8 hours (2 x 1400mAh)
Charging time (>1A supply): Approx. 4 hours
Dimensions: 165 mm x 95 mm x 35 mm
Net weight: 745 gram


http://www.phatlabaudio.com
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Re: Rør, hvis du tør

Indlægaf Sebastian L » 22. jan 2014, 17:31

Helt igennem fremragende og uundværlig tråd i ethvert respektabelt headfi-forum! Alle mine 10 tomler op for dette initiativ.
Jeg har endnu en lille bøn om et fast indslag for hver post: info om designerens og producentens land. Altså, er der fx tale om en amerikansk, tysk, engelsk, japansk eller bare endnu en kinøjser ;-)
Det mener jeg, er meget vigtig info.

I øvrigt rigtig fint, at du begynder med at have alle de store vigtige flagskibe med, som Eddie Current, EAR, Cavalli (som er en hybrid), Leben, Woo, Ray Samuels osv. Dog savner jeg Balancing Act under Eddie Current.
HE60, STAX SR-404 Signature, Mjölnir KGHSSV Carbon, Little Dot mkIV se, totaldac D1 dual
Sebastian L

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Re: Rør, hvis du tør - Röhrenschmiede

Indlægaf kvik » 22. jan 2014, 18:32

Röhrenschmiede Comet (€5560)

Röhrenschmiede Comet.jpg
Röhrenschmiede Comet.jpg (465.71 KiB) Vist 11047 gange

High-end tube preamplifier with integrated OTL headphone amp, 3 Line inputs, 1 Rec output, and 1 Phono MM with adjustable capacitance. Handmade to order! With chassis in polished chrome (or various custom surfaces), 4x ECC83, 2x 6N6P.

The Comet preamplifier captivates with its warm, excellent and finely resolved sound and its elegant appearance. High-quality and hand-picked components in conjunction with a sophisticated circuit design guarantee an unrivalled listening experience. In addition to its 3 line inputs, this preamplifier has a capacitive-adaptable MM phono input. The line-out output is supplemented by an additional rec-out output for the connection of recording devices, headphone amplifiers and much more. The Rec-out output is also active in phono mode and allows, for example, RIAA equalized vinyl recording. A clean and powerful OTL tube power amplifier for headphones complete the equipment. On the back side are IEC sockets for power supply of other components such as power amplifiers, CD, etc.

The Comet preamplifier as well as the Rocket/Solo power amplifiers are all completely handmade with finest components.

Due to the individual production it is possible to take special requests into account after consultation, as long as CE comformity and general safety is upheld. In addition, chassis and/or the transformer top cover are given the possibility to be polished gold plated or polished copper or finished in all RAL colors.


Specifications
• 2 MM phono input boards with ECC83 EH, impedance 47K Ohm, selectable capacities 47, 100, 220 and 330 pF, can be added together
• Line with ECC83 EH, 3 inputs, 47K impedance, 0.775V input sensitivity
• Line output impedance 2,5K, 0,775V (up to> 3V internally adjustable)
• Rec Out output also in phono mode for connecting external devices such as tape, headphone amplifiers etc.
• Headphone output transformerless with 6N6P
• Completely separate signal routing of both channels
• 2 separate transformers to reduce the hum
• DC heating of the preamp tubes
• Main switch at the back switches on the appliance and the heating (control LED in the channel selector switch)
• Standby switch on the front switches on the operating voltage and the IEC outlets (6A) (control LED in the potentiometer)
• Input sensitivity Line: 775 mV
• Tubes: 4x ECC83 EH, selected, matched and 2x 6N6P Russia
• Ceramic tube holders with gold-plated contacts
• Mundorf/Cornell Dublier capacitors, Orange drops and Mica caps
• Dale metal film 1% resistors
• Anti-vibration circuit board suspension
• Custom-made transformers with particularly low-scatter sheets
• 1 gold-plated mass terminal 6 qmm for large cable cross-sections
• 12 gold-plated RCA sockets
• IEC mains socket with built-in fuse and 2-pole mains switch
• 2 IEC outlets for powering external devices (max 6A)
• Transformer top cover in polished chrome with engraved lettering "Comet"
• Polished anti-vibration feet made from solid aluminum
• Black powder-coated tube cage

https://www.roehrenschmiede.de/comet/
Beyerdynamic T1 v1 | AKG K240DF | AKG K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Reference
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Re: Rør, hvis du tør - STAX

Indlægaf kvik » 23. jan 2014, 00:23

STAX SRM-006tS ($1295)

STAX SRM-006tS.jpg
STAX SRM-006tS.jpg (158.72 KiB) Vist 16502 gange

Features
• High-voltage dual triode 6FQ7 / 6CG7 are employed in the output stage of the SRM-006tS. The well-sounding rich mid- and low-range tone covers all genres from vocal to orchestra and enables you to enjoy music over a long period of time.
• The balanced input via XLR terminal along with the custom-made double axis 4-gang volume controller enabled a full-balanced operation from input to sound element drive.
• High-quality relays are placed close to the input terminal to realize the shortest signal path, and the mutual interference between equipments is eliminated by switching the hot / cold side of the signal simultaneously.
• 3 lines of inputs are equipped including a XLR terminal. One of the RCA input terminals functions as a parallel out directly providing the incoming signal.[/i]

Specifcations
• Frequency response: DC-80 kHz / +0, -3 dB (in the case of use of one SR-407 unit)
• Rated input level: 100 mV / 100 V Outputs
• Maximum input level: 30 V r.m.s. / at Minimum volume
• Amplification: 60 dB (x 1000)
• Total harmonic distortion: Max. 0.02% at 1 kHz 100 V r.m.s. (in the case of use of one SR-404 unit)
• Input impedance: 50 KΩ / XLR balance 50KΩ×2
• Number of inputs: RCA×2, XLR×1 (balanced)
• Maximum output voltage: 300 V r.m.s. / 1 KHz
• Standard bias voltage: DC 580 V
• Power voltage: 120-240V ±10%, 50 to 60 Hz (adjusted for your area)
• Power consumption: 49 W
• Temperature range for use: Between 0º and 35ºC, max. 90% (no condensation)
• External dimensions: 195 (w) x 103 (h) x 375 (d) mm (including VR knob and pin jack (20 + 10)
• Weight: 3.4 Kg
• Vacuum tubes: 6FQ7/6CG7 type x 2

https://stax-international.com/products/srm-006ts/
https://www.audiosanctuary.co.uk/stax-s ... giser.html



STAX SRM-007tII ($1780)

STAX SRM-007tII.jpg
STAX SRM-007tII.jpg (69.07 KiB) Vist 16502 gange

Features
• We’ve taken another look at circuit constants and achieved a higher grade of reproducibility for SACD and other new-generation audio formats.
• Consists of a pure balance amplifier in which the XLR balance input does not have to pass through a transformer, an inversion amplifier, etc.
• Makes use of a simple two-stage amplification structure based on rigorously selected low-noise FET. The load resistance makes use of non-inductive coil resistance manufactured by Dale, thus realizing straightforward properties that take advantage of the features of vacuum tubes and outstanding sound quality with a high level of clarity.
• The output stage is designed to lower impedance by using a rigorously selected high voltage dual triode (6FQ7 type) in parallel connection, which has resulted in an improvement in dynamic range especially in the high frequency.
• The heater power source for the vacuum tube makes use of a power circuit of the DC ignition type using an electrolytic condenser and a high-speed Schottky barrier diode, bringing about further improvements in the SN ratio.
• Makes use of a large-capacity power transformer and capacitor.
• Equipped with one XLR (balance) input system and two RCA (imbalance) input systems, meaning that there is a total of three input systems.
• In the case of the RCA input, switching with the earth side ensures that there is almost no interference between devices.
• Use is made of a high sound quality quadruple volume unit which makes possible XLR input as well as all kinds of line level analog voice inputs.
• The RCA terminal “Input 1” is equipped with parallel output terminals and enables input throughout. Connection with other pre-amplifiers and recording decks, etc., is also possible.

Specifications
• Frequency response: DC-100 KHz / +0, -1.5 dB SR-007 or SR-404 Signature, when using 1 unit
• Rated input level: 200 mV / 100 V Outputs
• Maximum input level: 30 V r.m.s. / at Minimum volume
• Amplification: 54 dB (x 500)
• Total harmonic distortion: 0.01% / 1 KHz, 100 V r.m.s. output SR-007 or SR-404 Signature, when using 1 unit
• Input impedance: 50 KΩ / XLR balance 50KΩ×2
• Number of inputs: RCA×2, XLR×1 (balanced)
• Maximum output voltage: 340 V r.m.s. / 1 KHz
• Standard bias voltage: DC 580 V
• Power voltage: 120-240V ±10%, 50 to 60 Hz (adjusted for your area)
• Power consumption: 55 W
• Temperature range for use: Between 0º and 35ºC, max. 90% (no condensation)
• External dimensions: 195 (w) x 103 (h) x 420 (d) mm (including VR knob and pin jack (20 + 10)
• Weight: 4.7 Kg
• Vacuum tubes: 6FQ7/6CG7 type x 4

https://stax-international.com/products/srm-007t2/
https://staxaudio.com/driver/stax-srm-007tii


STAX SRM-700T ($3400)

STAX SRM-700T.jpg
STAX SRM-700T.jpg (512.35 KiB) Vist 4630 gange

The newly designed SRM-700T is a hybrid electrostatic headphone driver, inspired by the flagship model SRM-T8000. The first stage is a custom-made low-noise dual FET while the second stage is clear and high slew-rate vacuum tube 6SN7. The tube output offers warm and spacious music reproduction.

Specifications
• Type: FET input + vacuum tube output hybrid DC amplification driver unit
• Vacuum tube: 6SN7 x2
• Frequency response: DC – 100kHz (with one SR-009S)
• Gain: 60dB
• Harmonic distortion: 0.01% or less (1kHz/100Vrms output)
• Input impedance: 50kΩ (RCA), 50kΩx 2 (XLR)
• Maximum output voltage: 340Vrms (1kHz)
• Bias voltage: PRO 580V
• Operating temperature / humidity: 0 to 35 degrees C / less than 90% (non condensing)
• Input terminal: RCA x 1, XLR x 1
• Output: RCA parallel output terminal
• Power consumption: 54W
• Dimension: 240 W x 103 H x 393 D mm (maximum protruding portion included)
• Weight: 5.7kg

https://staxaudio.com/driver/stax-srm-700t



STAX SRM-T8000 ($5800)

Stax SRM-T8000.jpg
Stax SRM-T8000.jpg (1016.04 KiB) Vist 16396 gange

Features
• Low-noise, well-established 6922 dual triode tube adopted for high sound quality. The noise level is extremely low and, by just that much, the particle of low-level sound usually buried in noise comes up to the surface.
Then even the usual level sound clears up to improve sound quality such as transparency. It seems as if the glass which superficially looks transparent has been cleaned anew. The whole circuit forms a hybrid one using class-A semiconductor output stage with large current emitter follower. The result is very low noise, live and smooth musical sound as well as excellent spatial description.
• Balanced inputs realizing true tone quality of balanced transmission.
• Coupling capacitor-free configuration from input to output.
• The vacuum tube of the first stage is mounted on an independent board in order to eliminate vibration and external noise. Further, noises have been excluded thoroughly by vibration-proof damper and vacuum tube shield cover used also for a hard disk etc.
• The first large-sized toroidal transformer in the history of STAX driver unit has been adopted to attain low noise and low leakage flux. This also enables the reproduction of high-speed and live sound over the entire frequency region.
• The chassis is made of non-magnetic aluminum instead of conventional iron. Thus the factor of cloudy tone quality has been eliminated and the weight has become lighter at the same time.
• Four pairs of inputs are equipped. (Notes: LINE4 is an optional circuit board slot for future purpose. As for now, release is not yet determined.)
• LINE1, LINE2 or LINE3 inputs of the SRM-T8000 can bypass the incorporated volume controller, enabling it to connect to source equipments with volume controller or to an external attenuator. That is, the unit can be used as an exclusive power amplifier with no volume controller.
• The newly developed large-sized aluminum insulator combined with new vibration-proof material and high frictional coefficient (grip power) has been employed. The friction power is so high that you almost need not hold the unit when inserting the plug of your earspeaker.
• Various high-grade electronic parts have been employed paying careful attention to tone quality, performance and environments.
• Compatible with all STAX PRO-bias earspeakers with 5-pin plug.
• LINE1 is equipped with PARALLEL OUT bypassing input signals.

Specifications
• Frequency response: 1Hz - 115kHz / when used with one earspeaker
• Gain: 60dB (x1000)
• Harmonic distortion: 0.01% /1kHz
• Input terminal: LINE1/LINE2 (RCA), LINE3 (XLR), LINE4 (optional input for future)
• Rated input level: 100mV (at 100V output)
• Input impedance: 50kΩ (RCA) / 50kΩx 2 (XLR)
• Maximum output voltage: 470Vrms (1330V p-p)
• Mains voltage: AC120V/AC220/AC230/AC240, 50/60Hz (depending on your country’s voltage)
• Power consumption: 95W
• Operating temperature: 0 to 35 degrees C (less than 90% humidity, non condensing)
• Dimension: 320 (W) x103 (H) x395 (D) mm (protruding portion included)
• Weight: 7.3kg

https://stax-international.com/products/srm-t8000/
https://staxaudio.com/driver/stax-srm-t8000
Senest rettet af kvik 28. jan 2014, 17:07, rettet i alt 1 gang.
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Re: Rør, hvis du tør - Audio-Technica

Indlægaf kvik » 23. jan 2014, 01:31

Audio-Techninca AT-HA22TUBE ($450)

Audio-Technica AT-HA22TUBE.jpg
Audio-Technica AT-HA22TUBE.jpg (217.83 KiB) Vist 16390 gange

Features
• 2 vacuum tubes in pre-amplifier resulting in a thick rich sound that only tube amplifiers can attain.
• Independent Left and Right vacuum tube circuit faithfully reproduces hi-resolution sound.
• Design employs a hybrid system using both the vacum tubes and semiconductor technology.
• Die-cast aluminum case suppresses unnecessary vibration and distortion.
• A convenient line-through output function allows the use of an AV system or other AV devices.
• Equipped Ø6.3mm and Ø3.5mm stereo jacks, two headphones can be used at the same time using the front panels dual outputs.

Specifications
• Maximum output level:
500mW+500mW ( 16 Ω, T.H.D at 10%)
300mW+300mW ( 32 Ω, T.H.D at 10% )
150mW+150mW ( 64 Ω, T.H.D at 10% )
60mW+60mW ( 150 Ω, T.H.D at 10% )
30mW+30mW ( 300 Ω, T.H.D at 10% )
• Frequency response: 10 - 100,000Hz (-3dB)
• Total harmonic wave distortion :<0.25% (32Ω、20mW Output)
• Signal to noise ratio: >100dB
• Power supply:DC 15V 1.2mA (include AC adapter)
• Input connections: Line Level Analog Input (RCA x 2)
• Input attenuation: 0dB、-12dB
• Output connector: Ø3.5mm and Ø6.3mm Headphone Outputs, Line Level Analog Output (RCA x 2)
• Dimensions: H79mm x W105mm x D142mm
• Weight: 615 g
• Accessories: AC adapter

https://www.audio-technica.com.hk/index ... =30&sid=50
https://global.rakuten.com/en/store/yas ... /y4096335/

Note: Apparently discontinued, but still available a few places



Audio-Technica AT-HA5050H ($6000)

Audio-Technica AT-HA5050H.jpg
Audio-Technica AT-HA5050H.jpg (342.48 KiB) Vist 12438 gange

AT-HA5050H is a reference headphone amplier that is designed to work with any headphones, not just those from Audio-Technica. We understand that all headphones have a distinct sound signature and can perform very dierently when paired with an amp.
We wanted to make headphones perform at their best, while also letting the user choose the sound they like. So we have provided dierent output choices that can easily alter the sonic characteristics and performance of the headphones.
Unlike previously released headphone ampliers, the sux “H” in the model name signies that AT-HA5050H is a Hybrid amplier that employs a pair of tubes at the preamp stage and transistors at the power amp stage.
Employing tubes in the preamp adds warmth and depth to the music, while its bipolar transistors provide distortion-free Class A amplication that is powerful enough to drive any headphones, irrespective of their impedance level.


Product features
• Included a variety of sockets with different output impedance to allow you to choose the optimal output to match your specific needs
• D/A converter is optimized to be compatible with formats up to PCM 32 bit/384 kHz and DSD128 through USB with selectable Asynchronous and Adaptive modes
• Included a SPDIF coaxial digital input and two analog inputs with RCA jacks for unbalanced and XLR sockets for balanced audio
• Use a pair of E88CC tubes for valued sound quality and longevity. They matched bipolar transistors are carefully selected and paired for noise performance
• Employs high-quality Lundahl input transformers for the best sound quality in balanced inputs
• Included a pair of an elegant VU meters to add to the analog feel of tubes

Product specifications
• Type: Class A bipolar transistor amplier / vacuum circuit
• Load Impedance: 16 to 600 Ω
• Maximum Output Power:
2,000 mW + 2,000 mW (16 Ω load)
1,000 mW + 1,000 mW (32 Ω load)
500 mW + 500 mW (64 Ω load)
62 mW + 62 mW (600 Ω load)
• Frequency Response: 5 ~ 200,000Hz (at 10 mW output, 32Ω load)
• Total Harmonic Distortion: 0.08% (20 Hz-20 kHz, at 10 mW output, 32Ω load)
• Channel Separation: 70 dB (20Hz -20 kHz, 32 Ω load)
• Gain: Line : 14 dB / XLR : 13.5 dB
• Signal-To-Noise Ratio: 104dB
• Input Connections:
Analog - Line (RCA x 2) / XLR x 2
Digital - USB (Type B) / S/PDIF
• Output Connector:
Headphone output -
0.1Ω Output (6.3mm x 2)
33Ω Output (6.3mm x 2)
82Ω Output (6.3mm x 2)
120Ω Output (6.3mm x 2)
• Power Supply: AC100 V - 120 V / AC220 V - 240 V 50/60 Hz
• Rating Capacity: 53 W
• Dimensions: H100mm x W332mm x D327mm
• Weight: 11.0 kg
• Accessories Furnished: Power cable

http://www.audio-technica.com.hk/index. ... H&lang=eng
Beyerdynamic T1 v1 | AKG K240DF | AKG K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Reference
Zigis Trīsstūris | Eufonika H16M
Tento PortaDAC 1866OCUB | Parasound D/AC-1000 \\ Naim CD3 | Allo Digione Player
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Re: Rør, hvis du tør - Space-Tech Laboratory

Indlægaf kvik » 23. jan 2014, 10:52

Space-Tech Lab HA-101 (C$780)

Space-Tech Lab HA-101.jpg
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Single-ended 6922 head-phone amplifier + pre-amplifier

This is our entry level headphone amplifier, using the most common small 6922 tubes as the output devices. This unit can drive any headphones with an impedance higher than 16ohms. This headphone amp is also built with a pre-amp output connector, you can also use it as a pre-amp.


Specifications
• No. of inputs: 1 set of RCA inputs (option: additional input up to max 6)
• No. of outputs: 1 set of RCA pre-amp outputs, one 1/4" headphone O/P (16ohm)
• Freq response: 5Hz - 80Khz (-3db)
• S/N: Better than 80 db
• Gain: x15
• Phase: Inverted
• Manufacturing: Hand-wire point to point
• Tubes used: 4 x 6922 (option: USA NOS tubes upgrade add C$200)
• Standard chassis : Gold/ Black/Metallic MDF , Aluminum chassis (optional chassis : Mirror steel, black piano , solid-oak )

http://www.thebestamp.com/Headphone_Amps/HA-101.php



Space-Tech Lab SE-6BQ5-HP (C$980)

Space-Tech Lab SE-6BQ5-HP version 1.jpg
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Space-Tech Lab SE-6BQ5-HP version 2.jpg
Space-Tech Lab SE-6BQ5-HP version 2.jpg (240.45 KiB) Vist 16502 gange

6W x 2 single-ended power amplifier (Headphone amp)

This is our entry level single-ended power amplifier, using the most common 6BQ5 small power tube as the output section. A total of 4 output transformers are used to deliver the 6Wrms maximum. This amplifier can drive speakers with an efficiency above 86db/W, or it can be used as the second amp to drive the tweeter section of a bi-wireable speaker system. A special version built with NOS UTC 2W output transformers is available. A version with XLR balanced outputs and a dual input selector is also available.


Specifications
• No. of inputs: 1 set of RCA inputs
• No. of outputs: 1 set of speaker outputs ( 4-16 ohm)
• Freq response: 40Hz - 80Khz (-3db)
• S/N: > 80 db
• Phase: Non-inverted (option: inverted)
• Manufacturing: Hand-wired point to point
• Tubes used: 2 x 12AX7 + 2 x 6BQ5
• Output power/ch: 6Wrms pure class A single-ended, or 1Wrms use NOS UTC OPT
• Standard chassis : Gold/ Black/Metallic MDF , Aluminum chassis (optional chassis : Mirror steel, black piano , solid-oak )

http://www.thebestamp.com/Single-Ended_ ... E-6BQ5.php



Space-Tech Lab SE-6AS7G-HP (C$1180)

Space-Tech Lab SE-6AS7G-HP version 1.jpg
Space-Tech Lab SE-6AS7G-HP version 1.jpg (52.74 KiB) Vist 16502 gange
Space-Tech Lab SE-6AS7G-HP version 2.jpg
Space-Tech Lab SE-6AS7G-HP version 2.jpg (58.87 KiB) Vist 16502 gange

1W x 2 single-ended power amplifier (Headphone amp)

This is one of our top model single-ended power amplifiers. Although it only has 1Wrms, it can drive a pair of speakers with 90db/W efficiency to a reasonable loudness level. It is also a very high quality headphone amplifier, super quiet, super warm and rich sounding, with good body and density. The output transformer uses a NOS UTC 2W wide band transformer 600:8ohm type.

There is a special version of the SE-6AS7G, which employs a HPF (high pass filter) switch to select either full range or high frequencies. Another pair of pre-amp RCA outputs can be added to let this amp perform as a transformer output pre-amplifier. A pre-amp / power amp switch can alternate between speaker output or pre-amp output. This option will cost an additional C$300.


Specifications
• No. of inputs: 1 set of RCA inputs
• No. of outputs: 1 set of speaker outputs ( 4-16 ohm) + one 3/4 phone jack (option)
• Freq response: 10Hz - 40Khz (-3db) (500Hz-40Khz for build-in HPF )
• S/N: >80 db
• Phase: Non-inverted (option: inverted)
• Manufacturing: Hand-wired point to point
• Tubes used: 2 x 6SN7/6SL7/12AU7 + 2 x 6AS7G
• Output power/channel: 1Wrms pure class A, single-ended
• Standard chassis : Gold/Silver/Red/Green/Blue/ Black Metallic MDF , Aluminum chassis (optional chassis : Mirror steel, black piano , solid-oak )

Add C$150 to add high-pass-filter and selector switch
Add C$300 to add both HPF+sw , pre-out+sw
Add C$200 for solid oak chassis

http://www.thebestamp.com/Headphone_Amp ... S7G-HP.php



Space-Tech Lab SE-6AS7G-2W-HP (C$1480]

Space-Tech Lab SE-6AS7G-2W-HP.jpg
Space-Tech Lab SE-6AS7G-2W-HP.jpg (120.4 KiB) Vist 16502 gange

2W x 2 single-ended power amplifier (Headphone amp)

This is one of our best sounding single-ended power amplifiers. Although it only outputs 2Wrms it can nevertheless drive a pair of speakers with 88db/W efficiency to a reasonable loudness level. It is also a very high quality headphone amplifier, with a super quiet, super warm, rich sound. The output transformer employs a NOS UTC 2W wide band transformer.

This is the enhanced version of our small powered 6AS7G amp, which has a bigger power transformer for higher power output capability as well as a more transparent sound quality. This version can be built with a 300Hz (option: any freq) high pass filter with a by-pass switch. This makes it easier to adapt between a normal single amplifier system or a bi-amped configuration. Input level controls give flexibility to best match the tonal balance between the hi-section and lo-section amplifiers in a bi-amped system. A 3 input version is also available.


Specifications
• No. of inputs: 1 set of RCA inputs
• No. of outputs: 1 set of speaker outputs ( 4-16 ohm)
• Freq response: 20Hz - 40Khz (-3db) (300Hz-40Khz for High-pass-filtered position )
• S/N: > 80 db
• Phase: Non-inverted (option: inverted)
• Manufacturing: Hand-wired point to point
• Tubes used: 2 x 6SN7/6SL7/6SU7 + 2 x 6AS7G
• Output power/ch: 2Wrms pure class A, single-ended
• Standard chassis includes MDF construction in any color, or a gold/silver aluminum type.

Add C$200 for solid oak chassis
Add C$500 for ultra high gloss black piano finish
Add C$150 for black lacqor finish
Add C$200 for black-gold finish (G version)

http://www.thebestamp.com/Headphone_Amp ... -2W-HP.php



Space-Tech Lab QA-001-Mk3 / CP-101 / CP-1001 (C$780/1580/3380)

Pre-amp models with built-in headphone amp

http://www.space-tech-lab.com/Headphone ... e_Amps.php



Space-Tech Lab HA-1 / HA-2 / HA-3 (C$780/C$880/C$1480)

Tube/Mosfet hybrid headphone amp with Pre-Out

http://www.thebestamp.com/Headphone_Amp ... e_Amps.php



Space-Tech Lab DAC1 (6L6G version C$1480, EL32 version C$1680)

Space-Tech Lab DAC1.jpg
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This is a 8x over-sampling class DAC, convert any USB input format to 32bit 384Khz resolution, combine the pure tube rectifer and big output tube section, easily convert the digital sound into analoge sound with high-end vinyl playback quality. This might be the only and the best sounding 32bit USB DAC which can work with the wonderful sound Mullard EL32 and those other big power tubes like KT66 or 6550, it can effortlessly surpass the sonic performance of any small (6922, 12AX7...etc) / medium (6SL7, 6SN7...etc) size tube DAC and any solid-state DAC in the industry.

Features
• USB input capability let you easily hook up your computer (MAC / PC compatible) and transform them into a music server, which can play all ripped/downloaded regular CD or high resolution files
• Super enhanced power transformer for "Hanging-in-the-air" 3D imaging, and good enough to power up the power hungry KT120 or KT150 output tubes.
• SPDIF coaxial digital output to hook up other DAC which has no USB input capabilities.
• Headphone output with level control to use as super high grade tube headphone amplifier. The level control can also vary the output level of the DAC , so directly hook up to power amplifiers without the need of a pre-amplifier make possible.
• Advance microprocessor controlled tube soft-warm-up design, greatly extend lifespan of those tubes and prevent start up surge noise. Combine with our newest 2015 LNBT (Lo-Noise-Big-Tube) design, you can enjoy digital music with super high-end vinyl playback sound quality in unbelieve low noise background.
• Hand-wired for tube section in order to achieve super high performance with such a bang-for-buck price tag, we strongly believe this unit can easily take down any other name brands DAC even over $10,000 range.
• Super low resonance material chassis design for most pure and organic TUBE sound regeneration.

Specifications
• Input data rate: 16 bit , 20bit , 24 bit and 32 bit ( 44.1K/48K/88.2K/96K/176K/192K/352K/384K) in DSD/PCM format
• Dynamic range: 120db
• S/N: > 85db
• Max. output level: 2Vrms (RCA) 4Vrms (XLR)
• Input : USB
• Output : RCA + XLR balanced , headphone

Upgrade options
• STR-104, STR-1001 , STR-1002 Super rectifier upgrade
• Add input selector to switch between AUX input and USB input +C$180
• SPDIF input upgrade with 24bit 192Khz max. data rate +C$480
• SPDIF + AESEBU input upgrade with 24bit 192Khz max. data rate +C$880
• DSD64 & DSD256 input data format upgrade +$150

http://www.thebestamp.com/DA_Converters ... D-DAC1.php
https://www.canuckaudiomart.com/userads ... r_id=24170
Senest rettet af kvik 1. feb 2014, 00:45, rettet i alt 1 gang.
Beyerdynamic T1 v1 | AKG K240DF | AKG K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Reference
Zigis Trīsstūris | Eufonika H16M
Tento PortaDAC 1866OCUB | Parasound D/AC-1000 \\ Naim CD3 | Allo Digione Player
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Re: Rør, hvis du tør

Indlægaf librarian » 23. jan 2014, 10:58

Det er ved at være ret stærke sager, det her. Jeg tror jeg gemmer den grundige læsning af denne tråd til en lang aften alene med noget godt i glasset og på ørerne! Godt arbejde thumbs
Stationært: Sansui SR-222 MK-V|Luxman C/M 02
Transportabelt: Colorfly C4|Dragonfly black/red|iBasso D14
Hovedtelefoner:
AKG K240 DF / ER4S
AKG K340 / ikko oh1
Final Audio Piano Forte VIII
Stax SRD7 MK2 > Stax Lambda Pro
librarian

 
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Re: Rør, hvis du tør - Megahertz Audio

Indlægaf kvik » 23. jan 2014, 13:23

MegaHertz Audio designs a variety of tube amplifiers, including headphone amplifers, and offers circuit designs for DIY, as well as preassembled units, and custom builts.

http://www.megahertzaudio.it/prodotti/a ... er-cuffie/



Megahertz OTL 6080 (€490)

Megahertz OTL 6080.jpg
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OTL headphone Stereo amplifier with a 6080, made for headphones with impedances up to 100 ohms.
A headphone amplifier that is easy to make, is inexpensive and of good quality.




Megahertz OTL 6080 x2 (€1000)

Megahertz OTL 6080 x2.jpg
Megahertz OTL 6080 x2.jpg (61.96 KiB) Vist 16502 gange




Megahertz TakeT Integrated

Megahertz TakeT Integrated.jpg
Megahertz TakeT Integrated.jpg (34.75 KiB) Vist 16502 gange

Integrated amplifier expressly designed for piezo headphones PA TakeT



Megahertz TakeT Pre+Power

Megahertz TakeT Pre+Power.jpg
Megahertz TakeT Pre+Power.jpg (31.28 KiB) Vist 16502 gange

Expressly designed for piezo headphones PA TakeT
Version with separate Pre and Power units, yielding improved performance over the integrated version




Megahertz Peyote

Megahertz Peyote.jpg
Megahertz Peyote.jpg (153.79 KiB) Vist 16502 gange

Hybrid amplifier without feedback, full balanced, dynamic headphones of any kind.
The unit has a power output of around 10W 8 Ohm RMS on, practically can drive the speakers!




Megahertz Pace

Megahertz Pace.jpg
Megahertz Pace.jpg (51.56 KiB) Vist 16502 gange

Stax Electrostatic headphone amplifier
Single-ended circuits without feedback, Interstage transformers and output.
Bias voltage: 580V




Megahertz Guerra

Megahertz Guerra.jpg
Megahertz Guerra.jpg (139.52 KiB) Vist 16502 gange

Stax Electrostatic headphone amplifier.
Push-pull circuits with EL34 in triode pseudo, no feedback.
Bias voltage: 580V Designed for high-end Stax headphones.




MegaHertz MezzoGuerra

MegaHertz Mezzo Guerra.jpeg
MegaHertz Mezzo Guerra.jpeg (570.33 KiB) Vist 12058 gange

Single ended EL34 configured as a triode. Zero feedback, 5W RMS 8 Ohm. Bias adjustable for optimum headphone listening. Very accurate tube rectified power.

https://www.youtube.com/watch?v=oTCZL4P5Oqc



MegaHertz Pegaso

MegaHertz Pegaso.jpg
MegaHertz Pegaso.jpg (93.75 KiB) Vist 16502 gange

Single-ended class-A tube amp using Ei Elites ECC82 as preamp tube and Tung-Sol EL84 as driver tubes with transformer coupling and 2A3 as power tubes.
Beyerdynamic T1 v1 | AKG K240DF | AKG K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Reference
Zigis Trīsstūris | Eufonika H16M
Tento PortaDAC 1866OCUB | Parasound D/AC-1000 \\ Naim CD3 | Allo Digione Player
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Re: Rør, hvis du tør - Lab12

Indlægaf kvik » 28. jan 2014, 13:21

Lab12 HPA (£830)

Lab12 HPA.jpg
Lab12 HPA.jpg (113.07 KiB) Vist 16502 gange

OTL Tube Headphone Amplifier / Preamplifier with USB DAC

This is where it all started for the Lab12. Our love for music and high-end audio was as first and foremost challenge, explored years back throughout the headphone preamplifier. Dealing with the fragile signal and transforming it into the true high-end potent audio headphone amplifier is not the task, that everyone dares to explore. Intimate high-end audio headphone listening offers one of the most coveted and intimate musical listening experience, yet not every headphone amplifier is THE headphone amplifier. This is why we took a different and more challenging path and designed Lab12 Hpa as full blooded OTL tube headphone amplifier with the utmost transparent, musical and emotionally engaging hearth. We could, but we didn’t stop there. HPA is not only fully enclosed state of the art headphone system with included pure Lab12’s highest grade DAC, but its also fully operational, high quality preamplifier with multiple inputs including USB. Hpa tube preamplifier alone encompass all of our knowledge and know how. It offers the performance, that challenges preamplifiers few times the price and bring remarkable emotional bound. As all Lab12 products, the HPA also comes with the choice of multiple luxury paint finishes.


Features: 
• OTL tube headphone amplifier stage
• Blue Velvet ALPS Potentiometer
• Five separate regulated Power Supplies
• SRSG® implementation
• Gold plated Teflon rca connectors
• Gold plated tube sockets
• Analog retro nissei VU meter
• 5mm Aluminum face panel with luxury painting
• Five Years Guarantee

Specifications: 
• Power: 210 - 240VAC 50Hz (110 - 120VAC 60Hz)
• Power consumption: 60 VA max
• Frequency response: 5 Hz to 100K Hz (-3dB)
• Input impedance: 50K ohm
• Recommended headphones impedance: 32-600 ohm
• Tube complement: 3x 6n1p dual triode
• Inputs: 2x line stereo (RCA connectors), 1x USB
• Preamp output: 1x line stereo
• Headphone output: 1x 6.3mm jack
• Available colours: Matt Black, Pearl White, Custom colour
• Dimension (WxHxD): 32x11x29 cm
• Weight: 6 Kg

http://www.lab12.gr/hpa
Beyerdynamic T1 v1 | AKG K240DF | AKG K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Reference
Zigis Trīsstūris | Eufonika H16M
Tento PortaDAC 1866OCUB | Parasound D/AC-1000 \\ Naim CD3 | Allo Digione Player
kvik

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