Rør, hvis du tør



Re: Rør, hvis du tør - Clinamen Audio

Indlægaf kvik » 9. feb 2014, 03:50

Clinamen Ariel (€3450)

Clinamen Ariel .jpg
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The amplifier is completely single ended, with two active stages made with high-performance valves: the 6H30 that serves as a stage driver is used in a configuration that maximizes the linearity and the voltage swing; the power valve, for audio use, EL84, triode connected, provides 1 watt rms low distortion power.

The peculiarity of this circuit, compared to the majority of Headphone amplifiers, is that it doesn't use output circuits OTL (output transformer less) for both safety and musical reasons: Clinamen indeed strongly believes that the way of impedance matching (a trumpet if we speak of acoustic impedances, an audio transformer if we speak of electric impedances) is the main way that allows to pursue the natural way of the sound.

Few components, inherently linear, carefully tied by the laws of physics, provide a dynamic and engaging sound, free of bitterness and emotional content. All active stages the polarization with fixed bias, the driver has the stabilised power supply with gas diodes. The power supply uses a generous filter inductance to provide a DC voltage with very low residual.

The wiring is entirely point-to-point with a very sophisticated masses, in order to render inaudible any noise in the headphones, which would otherwise be extremely annoying. The volume controls are independent for the two channels. Finally, the real power of 1 watt rms on load , it is absolutely superfluous to any sensible use of the device

The frame is in solid padouck, with a copper top plate, and a birch plywood bottom plate. The control panels are laser cut and gold engraved glass. Moving parts are made on an inhouse CNC machine.



• Headphone amplifier with 32 ohms impedance
• Output power: 1 Watt rms
• Valves: 2 x EL84, 2 x OD3, 1 x 6H30
• Asymmetric technology, zero-feedback, high transconductance Triodes
• Powered by inductive filtering and stabilized voltage driver stage with gas diodes
• Fixed Bias on all stages
• Independent volume adjustment on two channels
• Point-to-point wiring with teflon insulated, silver-plated copper with Tin solder 4% Ag WBT
• Frame in solid padouck, lacquered copper top plate, bottom made of Birch plywood
• Input sensitivity: 700 mV rms
• Frequency response: -3dB 5Hz-22.3kHz
• Power consumption: 46 Watt
• Fuse: 350 mA delayed

Optional: Pair of input transformers in Superpermalloy €480


http://www.clinamenaudio.com/p.php?id=214
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Re: Rør, hvis du tør - Yarland

Indlægaf kvik » 9. feb 2014, 04:37

Yarland FV-34C-V ($320)

Yarland FV-34C-V.jpg
Yarland FV-34C-V.jpg (83.74 KiB) Vist 9771 gange

Integrated Vacuum tube amplifier / Headphone Amplifier

• power Tube EL84 * 4
• impulse Tube 6N3/5670 * 2
• Signal Tube 6N2 * 1
• working State Class A / Push-pull
• bias Voltage State Self-bias
• rated Full - Power Bandwidth 4-8ohms - 20hz To 20khz +/-1db
• maximum Output Power 15w
• outpur Load Impedance 4-8ohm Earphone 16-120ohm
• SNR 90db
• channel Balance 0.5db
• input Impedance At 1khz 100K
• input Terminal Cd / Aux
• output Terminal Line output * 2
• power Consumption 90w
• product Size 190 * 230 * 200(mm)
• weight 9 Kg

http://www.yarland.com/m-series/fv-34c-v/



Yarland T84-P ($675)

Yarland T84-P.jpg
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Integrated Vacuum tube amplifier / Headphone Amplifier

• power Tube EL84 * 4
• impulse Tube 12BH7/12AU7 * 2
• Signal Tube Ecc803/12AX7 * 2
• working State Class A / Push-pull
• bias Voltage State Self-bias
• rated Full - Power Bandwidth 4/8ohms - 10hz To 40khz +/-1db
• maximum Output Power 15w
• outpur Load Impedance 4ohm And 8ohm Earphone 16-120ohm
• SNR 90db
• channel Balance 0.5db
• input Impedance At 1khz 100K
• input Terminal Cd / Aux / Line / XLR
• output Terminal without
• power Consumption 90w
• product Size 235 * 300 * 200(mm)
• weight 12 Kg

http://www.yarland.com/t-series/t84-p/

NB: Headphone jack on left side
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Re: Rør, hvis du tør - Art Audio Lab

Indlægaf kvik » 9. feb 2014, 16:03

Art Audio Lab m116 ($760)

Art Audio Lab m116.jpg
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For those who do not have the opportunity to enjoy listening to their favorite music through loudspeakers, our company offers a high-quality single-ended tube headphone amplifier, Art Audio Lab m116.

The presence of the transformer output and the ability to select the impedance load, allows you to connect any type of headphones, both high and low impedance. Due to the stabilization of the anode and filament voltage, there ais no parasitic interference and noise, which makes listening to music very comfortable. Also, the use of tube rectification and the presence of galvanic connections between the stages allowed to achieve the highest sonic performance of the amplifier.

The input selector allows you to connect up to three signal sources, which eliminates the inconvenience of switching cables. The sensitivity of the three inputs is the same.

Art Audio Lab m116 also has a line-out that allows it to be used as a pre-amplifier.

The amplifier uses 6 tubes - 6C4P, 6ZH11P, and 6S19P for the power supply, and 6N1P and two 6N6P for the amplifying part.

The front panel of the amplifier is made of solid wood, and is populated with power switch, volume control, power indicator in the form of a company logo, input switch and headphone Jack.

On the rear panel of the amplifier there are RCA sockets, 3 pairs of input and one pair of line output, headphone impedance toggle switches, and IEC and fuse sockets.



Specifications
• Input impedance: 100 kΩ
• Input sensitivity: 300 MV
• Load impedance: 20-600 Ohm
• Frequency response: 20 Hz-20 kHz ±1 dB
• Maximum output power: 1 W
• Signal/noise ratio: -80 Db
• AC power: 220 V, 50-60 Hz
• Power consumption: 50 W
• Dimensions (WDH): 460 x 370 x 120 mm
• Weight: 11 Kg.
• Front panel: Choice of black ash, mahogany or walnut


http://www.artaudiolab.ru/serijnaya-pro ... -lab-m116/
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Re: Rør, hvis du tør - Analog Squared Paper

Indlægaf kvik » 10. feb 2014, 11:39

Analog Squared Paper TU-05 ($1075-1525)

TU-05.jpg
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TU-05 is a portable pure tube headphone amp. The audio signal does not pass through any semiconductors. The tin ube is driven pure Class A as SET (Single Ended Triode. All module is built in high stiffness aluminum frame. TU-05 is more compact and lighter than TU-03s, but is more powerful. This is due to a new synchronous DD-converter developed inhouse, which is very low noise and high efficiency.

Features
• Simple and pure single-ended transformer type amplifier.
• Minimalistic design and robust 4mm aluminum bend frame
• Luxury hand-wired amplifier module
• Super clean power module, with inhouse developed synchronous DC converter
• Non-feedback amplifier with excellent time domain characteristics
• Transformer and the core specially developed
• Impedance matching switch
• Copper foil CNC-machined board
• All silver solder (unleaded)
• All parts made in Japan. All handmade

Specifications
• Tubes: 1U4(1T4) + 3S4
• Drive Circuit: Class-A Single-Ended Triode
• Power: 40+40 [mW]
• Input Impedance: 100k [Ω]
• Output Impedance: Low 4, Mid 8, High 16 [Ω]
• Frequency Response: 30〜30,000 [Hz] at -3dB
• Size: W130 H44 D180 [mm]
• Weight: 1.0 [kg]
• Battery Life: 7 [h]
• Power source: 18650 Li-ion battery and 12V special charger

Optional
• Silver, Black, Pale Gold, or Emanel housing
• Black or Chocolate leather case, customizable pocket size
• External, clean power box for stationary use
• LED Colour can be customized
• Pentacon x1 can be installed
• Tube guard panel offered

http://www.analog2p.com/product/tu05.html



Analog Squared Paper TUR-06 ($1050-1250)

TUR-06.jpg
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TUR-06 is a portable headphone amplifier using full discrete transistor and vacuum tube.

It is a new style of portable audio balancing power and beauty. TUR-06 is one-third the size and half the weight compared to the TU-05. Frame structure body is compact and very sturdy. Its round illumination light is inherited from TU-05. There is no cumbersome switch, it turns on when you turn up the volume knob.

It was mounted it in a small body The battery to drive 15 hours, Tube of MT size that is independent left and right channel, Discrete amplifier board like full-scale amp without using op-amp, and original DC-DC converter for ultra-low-noise and high efficiency. All of which is innovation.

Meeting of the strength of the transistor and the beauty of the vacuum tube is exciting. Transistors and vacuum tube works with pure Class A. The transistor stage is designed for perfect harmony with the tube. But there are no harsh distortion even though used non-NFB. It can play up to four octaves above the audible limit frequency. And it has Butterworth boost circuit to improve the rise of bass without causing disturbance of the phase.

Sound of big scale full-size is packed all in this small chassis. Let's go out together.


Features
• Powerful sound and the smoothness of the vacuum.
• Dual Independent power capacitor.
• Luxury amplifier module of Discrete.
• Super clean power module.
• Non over all feedback amplifier.
• Independent gain Adjuster.
• Natural super low-frequency boost.
• Copper foil CNC shaving board
• All parts made in Japan

Specifications
• Tube: 1U4(1T4)
• Drive method: Pure Class A Non NFB SEPP
• Output Power: max 100+100 [mW]
• Output Impedance: 8~200 [ohm]
• Freq response: 20~220k [Hz] at-6dB
• Size: W140 D100 H34 [mm]
• Weight: 490 [g]
• Power source: 18650*2 + spetial charger
• Battery life time: 15h

Optional
• Black or Chocolate leather case, customizable pocket size
• LED Colour can be customized
• Pentacon x1 can be installed
• Output impedance can be customized

http://www.analog2p.com/product/tur06.html



Analog Squared Paper TUR-06es ($1595)

A2P TUR-06es.jpg
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Portable OTL tube amplifier for electrostatic headphones

Features
• 3A5 directly heated dual triode used as driver tube
• 4 mm thick aluminum frame structure
• Uniquely designed 180V synchronous boost power supply circuit
• High-voltage power supply with improved reliability and safety
• Clear, transformerless sound
• Left and right Independent power capacitors
• Bias voltage can be adjusted up to 540V (This product is 250V bias. Please use at your own risk when raised to 540V)
• Leather case and charger of the 06-series can be used

Specifications
• Tubes: 3A5
• Drive Circuit: Class A OTL PP
• Output Impedance: 150 [Vrms]
• Input Impedance: 50K [Ω]
• Freq Response: 5〜100,000 [Hz] at-3dB
• Size: 550 [g]
• Weight: W140 H34 D100 [mm]
• Battery Life: 5 [h]

https://www.analog2p.com/product/tur06es.html



Analog Squared Paper TUR-08 ($2225)

TUR-08.jpg
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HIgh power BTL Tube x Transistor hybrid amplifier for low-efficiency headphones

TUR-08 has the power to sufficiently drive low-efficiency headphones, whether planar-magnetic or dynamic, maintaining the clarity of the TUR-series and the dynamic feeling of the tubes.

The internal is composed of an EMF-shielded tube preamplifier section and a powerful buffer amplifier section with eight power transistors.

It is designed to bring out the ideal characteristics of parts and headphones by adjusting the operating range of the tube checking the Level meter and continuously changing the gain level.


Features
• 1U4 Direct heated tube family used for amplification.
• Strong buffers support both single output and BTL.
• Strong driving and braking by quad amplifier.
• Non over all feedback amplifier.
• LR independent power supply and capacitors.
• High Quality original power supply technology.
• Low noise design by independent adjustment level of tube pre and Buffer.
• Level meters that capture suite points of vacuum tubes.
• Battery check function with meter.
• Unbalanced input is basic. Balance input is Exclusive and optional.

Specifications
• Tubes: IU4 (IT4)
• Drive Circuit: Class-A NNFB 4ch
• Phase Inverter: MUSES8920
• Output Power: 4+4 (BTL) 1+1 (Single) [W] at 8 ohms
• Analog Input IMP: 10K [Ω]
• Frequency Response: 5-100k [Hz] at -3 dB
• Size: W170 H44 D140 [mm]
• Weight: 810 [g]
• Battery Life: Max 6h

http://www.analog2p.com/product/tur08.html
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Re: Rør, hvis du tør - DIYHiFiSupply

Indlægaf kvik » 10. feb 2014, 19:34

Chazz II ($400)

DIYHiFiSupply Chazz II.jpg
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The Chazz II makes it own statement. You be the judge:

• OTL through film caps. MUCH much better clarity, finesse and speed as compared to electrolytics.

• Anode vs cathode sound. Dual Outputs on the front panel: One takes from the anode and the other from the cathode. The circuit is patented and allows this little trick. It allows you to experience the difference between anode and cathode sound. You can also drive with both (two headsets) at the same time.

• True balanced-mode. We now have a pure copper served with teflon cable which allows true balanced-mode and includes the HD600-type connectors for plug-in operation. It is a worthwhile difference.
Simply put: hot/cold conductor takes signal from the anode and cathode of the tube. You can still select local feedback level but as one headphone set uses both outputs, only one headset can be driven at a time in balanced mode. It runs true balanced. Only the screen is connected to the phono plug body but signal is totally floating and never touches ground.

• Linestage: Also we configured a set of phono cables with RCA ends so the Chazz2 can also be used a a very beefy (and quiet) linestage to drive your big system. And still allows switching between anode/cathode feed and 0/3/6dB feedback. FUN! Allows voicing your hifi system.
- Adjustable feedback. Front panel selector toggles 0/-3/-6dB feedback. A comparison is VERY interesting! You choose the flavour you like.

• Carbon attenuator because we don't like plastic in between us and the music. We are a carbon-based lifeform.

• Good for money tubes. 6AS7/6080/6N13 power tube. Close to unity gain and low output impedance make this ideal for headphone amplifier. A proven favourite with OTL users too. In good supply and low cost.
12AU7 x 2. We all know this tube. Easy rolling and sound meshes very well with the 6AS7. It gives more gain but the reason is distortion is 10x less with 2 x 12AU7 vs 1 pc of 12AX7. The difference is noticeable to those with a taste for the high end.

• Solid chassis. The Chassis is made of 4mm thick chassis and 7mm thick faceplate. Dimensions are 170mm x 310mm x 162mm (WxLxH). Weight 5 kg + shipping materials.

• Back panel: Two pairs of gold plated RCA inputs and selector switch to choose source.

• Optional: 4 x 0.1uf Obbligato tinfoil/teflon coupling caps $100.



http://shop.diyhifisupply.com/product/c ... assembled/
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Re: Rør, hvis du tør - Musical Paradise

Indlægaf kvik » 10. feb 2014, 22:57

Musical Paradise MP-301 MK3 ($340)

Musical Paradise MP-301 MK3.jpg
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The MP-301 series is the most popular Musical Paradise tube amp which was first released in 2008. In 2011, the MK2 was introduced to the market with many improvements. The enhancement process has never been stopped. Today, we want to introduce you the new MP-301 MK3, the third generation of the MP-301 series. After collecting large amount of users' feedback and recommendation during the past years, we bring the MP-301 series to a new high performance level.

Here is the list of improvements:
• The power transformer is upgraded. The EI core is 30% larger to lower the working temperature. The potting material is upgraded to higher grade epoxy to improve the strength and heat resistance. More precise user configurable input voltages: 110V, 120V, 220V, 240V.
• Added KT88 and 6550 power tube support.
• The case construction is improved to be stronger and much easier to access when service or upgrade is needed. Since the steel is thicker, and the case is a bit wider, the background hum is much lower than the MK2 version when using low impedance headphones. It is hardly noticeable now.
• The circuit is improved to further lower distortion and increase the stability when using some lower quality power tubes.
• High quality screw-in connectors are used on the PCB boards, so the PCB can be removed much easier without soldering when service or upgrade is required.
• Output transformers are improved with better construction to improve low frequency response.
• Total power supply filtering capacitance is increased by 60uf to further lower background noise.

And the current 2018 Deluxe Version is further improved:
• The whole PCB board is gold plated for better signal purity, and PCB board layout is improved.
• The total power filtering capacitance is increased again to further lower noise floor.
• Seperate left and right channels filament power supply.
• Signal noise ratio is improved.
• High quality power switch. Made in Japan by ALPS.
• Higher quality input and output selection switches.
• Lower tolerance ALPS volume control.
• Higher quality headphone Jack.


Features:
• One amplifier supports 6L6 (6P3P), KT66, 5881, EL34, KT77, KT88 and 6550.
• Auto biasing design that eliminates manual adjustment.
• Class A single ended; Zero negative feedback.
• Built with high grade genuine components. (US Military Vishay Dale resistors. RIFA 450, Rubycon, Philips BC and Nichicon capacitors.)
• 24K gold plated input and output terminals.
• Transformers are made with oxygen free copper wire and Japanese Z11/M6 silicon core.
• 2 oz. thick copper PCB.
• Proven by many audiophiles. Excellent sound quality guaranteed.

Specifications:
• Tubes (Default): 6L6 (6P3P) x 2, 6J8P x 2
• Tubes (Optional): EL34 x 2, 6550 x 2
• Topology: Class-A Single Ended
• Output Power (RMS): 6.5W x 2 (Speaker) 2W x 2 (Headphone)
• Output impedance: 4Ω- 8Ω(Speaker), 32Ω-600Ω(Headphone)
• Frequency Response: 15Hz - 30Khz
• T.H.D: <=1% (1Khz)
• S.N.R: 89dB
• AC Input: 100-120V / 220-240V 50-60Hz Worldwide Use
• Weight: 10KG
• Dimension: (W 20CM x L 26CM x H 16CM)
• Warranty: 1 Year Limited (One month for tubes)

Tube Replacement Guide:
• V1 V2: 6SJ7, 5693, 717A, 713A, 6SH7, 6SD7, 6J8P, 6*8
• V3 V4: 6P3P, 6L6, KT66, 5881, EL34, 6CA7, KT77, KT88, 6550


http://www.musicalparadise.ca/store/ind ... duct_id=54
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Re: Rør, hvis du tør - Mistral Audio

Indlægaf kvik » 11. feb 2014, 00:50

Mistral HP-509 ( $250)

Mistral HP-509.jpg
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Class A Vacuum Tube Headphone Amplifier, Preamplifier with USB DAC

HP-509 is designed to provide unique options for listening, control and system building. As a headphone amplifier it delivers audio that is balanced, smooth, dynamic and open. Its super-low-noise tube amplification circuitry ensures that even the costliest "phones will perform at their best".

With the Mistral HP-509 building a true high-performance stereo system with amplifiers for each channel is within reach of any music lover. If you're a fan of all things digital the Mistral HP-509 will bring your digital music collection to a whole new level. With a built in USB/Sound card capability using a High End Burr-Brown PCM2702 DAC, music through the Mistral HP-509 with headphones or through a component audio system will be lush, lively and powerfully detailed. You'll wonder where all this music was before.


• Tubes: 6N2
• D/A: Burr-Brown PCM2702
• Output Power: 500mW x 2 @ 100 ohm load
• Headphone impedance: 30 to 300 Ohm
• THD: <0.1% @ 100 ohms at 1kHz, 300mW
• Input Sensitivity: 750mV
• Frequency Response: 15Hz~25kHz
• S/N: 88 dB
• Input: RCAx1, USBx1
• Output: RCAx1, 6.5 Jack x1
• Dimensions: 17 cm W, 23 cm D, 13cm H
• Weight 3.5 KG

http://www.mistralaudio.com/product_view_605.html


NB: Also sold as NAPA Acoustics NA-208H
http://hstrial-napaproductso.homestead. ... onics.html
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Re: Rør, hvis du tør - Meixing

Indlægaf kvik » 11. feb 2014, 02:04

Meixing MingDa MC84-C EAR ($700)

Meixing MingDa MC84-EAR.jpg
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Features:
• The machine case is made by aluminum alloy and it looks elegant and beautiful.It has a better shielding effect and the music background seems more peaceful.The triangular knob specially made by Meixing is of artistic beauty and can distinguish the location between volume and selection remotely.
• The panel adopts transparent window design and the tubes are clearly visible.It sets up USB input for connecting computer and provides users with a vast source selection.
• ALPS potentiometer from Japan ensures the balance of the two-channel sound.The power transformer The two channels adopt silicon steel from Japan and output transformer with high-quality oxygen-free copper wire.It ensures the high tone quality.
• Output Impedance divides into 3 groups,32Ω,300 Ω and 600 Ω.You can choose one of them according to the output impedance of your earphone.
• High frequency sounds round,elegant and clear.Intermediate frequency feels full and gradational,while low frequency leaves us an amazing dynamic sense as well as a clear rhythmic sense.The machine is produced by hand-welded.

Specifications:
• Output power: 600mw-1.8w
• Output impedance: 32Ω, 300Ω, 600Ω (selectable)
• Input voltage: 500mv
• Input impedance: 100K
• Distortion: ≤ 0.8%
• Signal to noise ratio: 95dB
• Input Select: RCA / USB
• Power consumption: 50W
• Frequency response: 10Hz - 55KHz
• Amplifier tubes: TUNG-SOL 6SL7 x1 (EH)6H6 x2
• Voltage: AC110V/220V 60Hz/50Hz
• Net Dimensions: L30 x W20 x H16 cm
• Net Weight: 8kg

http://www.mei-xing.com/english/English ... c-EAR.html
https://www.china-hifi-audio.com/en/mei ... gda-p-1243



Meixing MingDa MC300-EAR ($2050)

Mexing MingDa MC300-EAR.jpg
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The use of high quality triode 300B in the headphone circuit results in a silky sound as expected from this triode valve. The power transformers and output transformers are handcrafted in our factory incorporating the experience of trained staff, which results in a fine tuned product with a balanced sound taking the benefits of 300B to the audible limits. This amplifier plays at level field in this market segment with other producer and offers for the discerning user a good price to performance ratio. The two ear jacks in the front panel are fully-balanced outputs and can be used connected simultaneously with two headphones. The user can choose five different impedance level outputs. An USB interface is incorporated in the setup. As usual we only sourced high quality components such as listed under features below.

Features:
• Aluminum alloy chassis are curved by our numerically-controlled machines. They are not only elegant but also play an important role in shielding and mechanical decoupling.
• Four in the HIFI world for their audio properties highly acclaimed Denmark Jensen capacitors are used in this amplifier.
• The volume potentiometer is a high class step by step balanced audio attenuator and evidences no audible and measurable mechanical noise.
• Carefully selected Swiss NEUTRIK high class gold coated ear jacks in tandem with fine copper selector switches reduces fatigue noise in the distant future.
• Triangle knobs specially made by Meixing ensures visibility of the selector position even from a distance.
• High quality input and output terminals guarantee a long working life and low replacement and maintenance costs.
• The Class A integrated amplifier can drive speakers of 88dB sensitivity to a maximum of 100W.

Headphone Specifications:
• Output impedance: 8Ω,32Ω,80Ω,300Ω,600Ω
• Input sensitivity: 440mv
• Output power: ≤900mw.
• Signal to noise ratio: 96dB
• Frequency range: 19Hz-45KHz ±1dB
• Valves: Psvane 300B x 2, Ruby 12AU7 x2, 5U4G x1, 6E1 x1

Integrated AMP specifications:
• Ouput power: 7W x 2
• Output impedance: 4Ω, 8Ω
• Power consumption: 120W
• Net dimension: L430mm x W290mm x H200mm
• Net weight: 22kg

http://www.mei-xing.com/english/English ... 0-EAR.html
https://www.hifi-amplifiers.com/en/ming ... -1822.html
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Re: Rør, hvis du tør - Orphean Sound

Indlægaf kvik » 11. feb 2014, 17:09

Darkvoice 336SE ($240)

Darkvoice 336SE.jpg
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The model uses a double-triode 6N8P to amplify signals from the left and right channel and a double-triode 6N5P with low internal resistance as cathode output. The left channel and right channel are supported by the same set of power supply.

• Tube Used : 6N8P, 6N5P
• Frequency: 10Hz ~ 30kHz (-1db)
• Distortion: <=2%
• Signal-to-Noise Ratio: > 100db
• Output Power: > 2W
• Ambient Temperature: -10~60℃
• Output impedance: 32 to 600 ohm
• Power handling capacity: 1W
• Output terminal: 6.3mm Stereo Jack
• Input terminal: RCA Jack
• Power supply: 110V, 220~240V version
• Case dimension:about 300mm(length) 152mm(width) 280mm(height)
• Gross weight: : 5.5kg

https://www.ebay.com/itm/DarkVoice-336S ... :rk:1:pf:0



Darkvoice 3322 ($480)

Darkvoice 3322.jpg
Darkvoice 3322.jpg (88.63 KiB) Vist 9771 gange

The model uses two pentodes 6J1 to amplify signal from the left and right channel respectively and tow triodes 6C19 with low internal resistance as cathode output of the two channels. The left channel and right channel are supported by the same set of power supply.

• Tube used: 2X6J1, 2X6C19
• Frequency: 10Hz ~ 30kHz (-1db)
• Distortion: <=2%
• Output impedance: 32 to 600 ohm
• Signal and Noise Ratio: > 100db
• Output Power: > 2W
• Output terminal: 6.3mm Stereo Jack and RCA Jack for pre-amp output
• Input terminal: RCA Jack
• Power supply: 220~240V ,110V
• Color: Silver
• Weight: 6.6kg

http://www.shenzhenaudio.com/darkvoice- ... ifier.html



Darkvoice 337 ($635)

Darkvoice 337.jpg
Darkvoice 337.jpg (49.12 KiB) Vist 9771 gange

The model uses two pentodes 6J8P to amplify signal from the left and right channel respectively and two triodes 6N5P with low internal resistance as cathode output of the two channels. The left channel and right channel are supported by different power supply.

• Tube Used: 6J8P and 6N5P
• Output impedance: 30 to 600 ohm
• Frequency Response: 10Hz ~ 35kHz (-1db)
• Signal-to-Noise Ratio: > 100db
• Distortion: <=2%
• Output Power: > 2W
• Ambient Temperature: -10~60℃
• Power supply: 110V, 220~240V
• Case dimension: about 280mm(length) 418mm(width) 200mm(height)
• Gross weight: 12 Kg or 6.6 lbs

http://www.analogmetric.com/goods.php?id=648



Darkvoice 337SE ($1245)

Darkvoice 337SE.jpg
Darkvoice 337SE.jpg (37.34 KiB) Vist 9771 gange

The model uses two imported pentodes EF80 to amplify signal from the left and right channel respectively and two imported triodes 6080 or 6AS7 with low internal resistance as cathode output of the two channels. The left channel and right channel are supported by different power supply. VISHAY filter capacitor and resistor.

• Tubes : 6N8P*2, EF80*2 (6080, 6080g, 6080w, 6AS7, 6AS7g, 6AS7w)
• Output impedance: 32 to 600 ohm
• Frequency Response: 10Hz ~ 35kHz (-1db)
• Signal-to-Noise Ratio: > 100db
• Distortion: <=2%
• Output Power: > 2W
• Ambient Temperature: -10~60℃
• Outputs: 6.3mm Headphone Jack
• Inputs: RCA Line-In
• Power supply: 220~240V,110V
• Size: apprx 280mm(length) 418mm(width) 200mm(height)
• Color: Black
• Weight: 15 kg

http://www.analogmetric.com/goods.php?id=654
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Re: Rør, hvis du tør - Yu Qin Audio

Indlægaf kvik » 11. feb 2014, 20:55

La Figaro 332C ($390)

La Figaro 332C.jpg
La Figaro 332C.jpg (55 KiB) Vist 9771 gange

Tube Headphone Amplifier & Preamplifier

• Tube Used: 6J8P and 6N5P
• Frequency: 12 hz~100 Khz (-1dB)
• Distortion: <=2%
• Output impedance: 30 to 600 ohm
• Power handling capacity: 1W
• Output terminal: 6.3mm Stereo Jack

https://www.shenzhenaudio.com/la-figaro ... ifier.html
http://www.head-fi.org/t/463488/the-dar ... ion-thread



La Figaro 332S ($440)

La Figaro 332S.jpg
La Figaro 332S.jpg (55.45 KiB) Vist 9771 gange

• Drive Impedance Range: 32-600 Ohms
• Frequency Response: 10Hz-30kHz+/-1dB
• S/N: >100dB
• Power Output: >0.6 Watt

https://www.shenzhenaudio.com/la-figaro ... ifier.html



La Figaro 339 ($750)

La Figaro 339.png
La Figaro 339.png (802.4 KiB) Vist 9771 gange

• Drive Impedance Range: 32-600 Ohms
• Frequency Response: 10Hz-30kHz+/-1dB
• S/N: >100dB
• Power Output: >0.6 Watt
• Packaging size: 460mm(long)*385mm(wide)*320mm (high)
• Product Size: 370mm(long)* 253mm (wide)*132mm(high)
(height including without tubes)
• Panel Size: 370mm(long)* 47mm(wide)*5mm(thickness)
• Package Weight:11.000kg (24.25lb.)

https://www.shenzhenaudio.com/la-figaro ... rsion.html
http://www.head-fi.org/t/502306/dark-voice-339
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Re: Rør, hvis du tør - G&W Tsinghua

Indlægaf kvik » 11. feb 2014, 22:36

G&W T-2.2A ($330)

G&W T-2.2A.jpg
G&W T-2.2A.jpg (217.08 KiB) Vist 9771 gange

Single-ended Class-A Tube Pre/Headphone Amplifier

Features:
Amplified using a common cathode line.
Using 3.2W power amplifier pentode.
Japan ALPS blue plastic package using potentiometer.
Using gold-plated solid copper knob.
Chassis with brushed stainless steel manufacturing.
EI-type core made ​​of imported power transformers, power of 100W.
Using the German gold FRAKO, red WIMA capacitors.
High-voltage DC power supply using slow-start delay.
Imported filter core choke inductors do.
Boot with mute function, delay 20 seconds into working condition.
Especially suitable for vacuum tube preamp circuit amplifier (gain 20dB)
The use of tube type 6N10J (tube ECC82, 12AU7), 6P14J (tube EL84, 6P14)


Specifications:
• Frequency range: 16Hz-110KHz (-1dB), 8Hz-238KHz (-3dB)
• Impedance for headphones: 200Ω-600Ω
• Distortion: 0.1% (VRMS: 1V, 1KHz)
• Input: 1 set of RAC,
• Output jack: 1 Group of 3.5mm jack, 1 group of RCA
• Power: 36W Static power consumption
• Tube: 6N10J (ECC82, 12AU7), 6P14J (EL84, 6P14)
• Dimension: 380 width x 220 depth x 120mm high
• Net weight: 6.5kg
• Shipping weight: 7.5kg
• Power supply: 1110V, 120V, 127V, 230V, 240V versions

http://www.gwtsinghua.com/Article/hot/200909/163.html
https://www.china-hifi-audio.com/en/gpo ... 07306c6360



G&W T-2.6F ($365)

G&W T-2.6F.jpg
G&W T-2.6F.jpg (210.43 KiB) Vist 9771 gange

Hybrid Tube Pre/Headphone Amplifier

Features:
A Russian tube 6922EH (or ECC88, 6H23) for voltage amplification, the advantage of wide frequency response, low output impedance, good transient response.
Hitachi of Japan to do 2SK214/2SJ77 complementary push-pull FET source-level output, low internal resistance, good linearity.
Power supply were used around the road super-regulator power supply, so that separation has been greatly improved.
High-voltage DC power supply using slow-start delay, to extend tube life. Power protection function with mute, delay 20 seconds into working condition.
Tube pre-amplifier circuit, the gain of about 23.5dB promote any tube and transistor-level power amplifier can achieve after the very good results.

Chassis:
• 10mm thick front panel with silver brushed aluminum panels, rear panel black brushed aluminum board.
• Double layer of stainless steel chassis processed.
• Aluminum precision machined using aluminum solid black knob.

Components:
• 6922EH tubes(ECC88, 6H23)
• Hitachi/Toshiba mosfet
• "EI" iron-cored inductor + Rubycon electrolytic capacitors
• 70 mm thickness copper-clad double-sided PCB
• Alps 2 x 100K(A) top grade potentiometer
• WIMA, ERO capacitors

Specifications
• Input Sensitivity: 150mV
• Frequency response: 10Hz ~ 208KHz (-3dB)
• Signal to Noise Ratio: 101dB (output 15Vrms reference value)
• Harmonic Distortion: 0.05% (10Vrms, 1KHz)
• Tube: 6922EH made in Russia (or ECC88, 6H23)
• Output power: 1000mW (20Hz ~ 20KHz)
• Adapter headphone impedance: 32Ω ~ 600Ω
• Static power consumption: about 60W
• Dimension: 350 × width 220 × depth 130mm high
• Net weight: 6Kg
• Shipping weight: 7kg
• Power supply: 110V, 120V, 127V, 230V, 240V versions

http://www.gwtsinghua.com/Article/produ ... 12/63.html
http://www.china-hifi-audio.com/en/gpow ... fier-p-304



G&W TW-F230 ($500)

G&W TW-F230.jpg
G&W TW-F230.jpg (490.84 KiB) Vist 5434 gange

Powerful Headphone and Speaker Amp

The TW-F230 headphone amplifier uses a precision dual differential amplifier circuit. Imported 70mm thick copper thin double-sided printed circuit board. A front-end amplifier is added to the front end of the headphone amplifier to improve dynamic and drive capability while maintaining an ultra-high signal-to-noise ratio. The Japanese Hitachi 2SK1058/2SJ162 FET is used as the complementary push-pull source output, with low threshold voltage and internal resistance, and good linearity. The power supply part adopts the transformer of the imported R-type iron core, and the extra thick copper is used as the shielding layer. Powered by a dual-bridge rectifier circuit, the advantages are wide frequency response, low output noise, and good transient response. The amp power supply is powered by an unregulated power supply, which greatly increases the dynamics. Adopt Japanese ALPS 2×50K (A) blue high-grade plastic potentiometer. Adopt WIMA, ERO and other world famous fever brand capacitors. The wiring uses a star-shaped grounding method to effectively control the noise on the printed board. A special silver-plated professional audio-grade headphone output socket. The front panel is made of 10mm thick silver-white aluminum wire drawing board, and the rear panel is black aluminum drawing board. The casing is machined from a stretched aluminum structure. Made of pure aluminum solid silver knobs, plus luxurious old mahogany wood. It has a mute function at boot, and it will enter the working state after a delay of 20 seconds. It can drive 8~600W high-end headphones and speakers. Can be used as a power amplifier, the gain of about 38dB to push 4-6.5-inch speakers, can achieve very good results.

TW-F230 has high-voltage swing and high current output capability, suitable for high impedance headphones, low sensitivity headphones, and large diaphragm sized headphones, such as:
1. High Resistance series headphones like Sennheiser HD800 and Beyerdynamic T1 
2. AKG's K701, K702 and other low Resistance Low Sensitivity series headphones 
3. Hifiman and the Audeze planar Headphones 
4. Sony's Z7 and other 70mm large diaphragm headphones 

In the 2018 version the circuit has been optimized, bringing improved transparency and overtone performance.


Specifications:
• Input sensitivity: 150mV
• Frequency response: 5Hz~300KHz (-3dB)
• Signal to noise ratio: 110dB (A weighting)
• Harmonic distortion: 0.001% (VRMS: 10V; 1KHz)
• Output power: 2 × 30W (8Ω, 20Hz ~ 20KHz)
• Adapter headphone impedance: 8Ω~600Ω high-end headphones and speakers
• Machine size: 270 mm× 220mm × 130mm(D*W*H)
• Machine weight: 6Kg

http://www.gwtsinghua.com/Article/produ ... 6/187.html
https://www.china-hifi-audio.com/en/gpo ... dio-p-1873
https://world.taobao.com/item/1604708611.htm
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Re: Rør, hvis du tør - Toolshed Amps

Indlægaf kvik » 11. feb 2014, 23:41

The Darling Head Amp ($2600)

Darling Head Amp.jpg
Darling Head Amp.jpg (363.79 KiB) Vist 1916 gange

We're excited to announce the NEW Dedicated Headphone Amplifier - The Darling Head Amp, based on the 1626 Transmitting Triode. Available now to drive “Low Impedance” phones (850mW @ 32 Ohm), or with “High Impedance” output transformers (700mW @ 300 Ohm). Several 2Tone base combinations are available to complement the new “Brushed Al 6061” plates. Final voicing was accomplished using Audeze LCD Magnetic-Planar Headphones and Klipsch Heritage Reference HP-3 Dynamic, Bio-Cellulose Headphones. We’re confident that this ALL-TUBE, PROPRIETARY-DESIGN, will set the new VALUE standard for Reference Headphone Amplifiers.

Features
• Custom-wound, single-secondary (Order either "Low" or "High") output transformers
• Choke-filtered power supply
• Tube-rectified, DC filament supplies (Super-low noise-floor)
• Point-to-point, hand-wired (No printed circuit boards)
• 300% Duty-rated 1% metal-film (PRP/Takman/Kiwame) and (Welwyn/Mills) wirewound resistors, channel-matched to less than 0.5%
• Carling Switches/CMC and EiZZ connectors
• 3mm (1/8") Etched and brushed 6061 aluminium front, back, top and bottom plates
• Hand-polished, finger-joined, 2tone/figured-hardwood amplifier base (check availability of pairings)
• Limited lifetime warranty to original purchaser (Tubes 30 days)

Specifications
• 850 [email protected] ohm (Low impedance OT’s) OR [email protected] ohm (High impedance OT’s)
• 25Hz-32KHz +/[email protected] less than 1.0%THD to either 32 Ohms (Low), OR 300 Ohms (High)
• Input Impedance: 50K
• Input Sensitivity: 1.43v to full output (Pre-Amp/Line-Stage optional, sources may be directly connected)
• S/N Ratio: -91db below full output (Exceptionally quiet noise-floor)
• Inputs: Two (2) switchable on RCA's
• Gain Adjustment: Stereo volume control
• Switched Outputs: 4-Pin XLR (Balanced), 1/4" Stereo Jack (Single-Ended) 
• Tube Complement: One type 84/6Z4 Rectifier, one 12SL7/2C52 river, and two 1626 Output Tubes.

https://www.toolshedamps.com/darling-st ... -amplifier
https://twitteringmachines.com/review-t ... -head-amp/



The Euphoria Stereo 45 Amplifier ($3500)

TSA Euphoria 45.jpg
TSA Euphoria 45.jpg (223.63 KiB) Vist 9437 gange

Features
• Vintage Tamura OEM output transformers
• Choke-regulated power supply
• Dual-discrete (per channel) tube filament supplies (Stereo separation is simply amazing!)
• Point-To-Point, Hand-Wired (No printed circuit boards)
• 300% Duty-rated 1% metal-film (PRP/Takman/Kiwame) and (Ohmite/Mills) wirewound resistors, channel-matched to less than 0.5%
• CMC bakelite tube sockets, Carling switches, CMC or Cardas connectors, noise-filtered IEC power inlet
• 3mm (1/8") Etched and brushed 6061 aluminium front, back, top and bottom plates
• Hand-polished, finger-joined, figured 2tone/hardwood amplifier base (See availability)
• Limited lifetime warranty to original purchaser (Tubes 30 days)

Specifications
• 2.7 Watt-per-channel single-ended, directly-heated-triode, Class "A" stereo amplifier.
• 20Hz-25KHz +/[email protected] less than 1.0%THD (Exclusively 2nd order) to 8 Ohms
• Input Impedance: 50K
• Input Sensitivity: 1.97v to full output (Pre-Amp/Line-Stage optional, sources may be directly connected)
• S/N Ratio: -87db below full output (Exceptionally quiet background noise)
• Inputs: Two (2) switchable on RCA's
• Gain Adjustment: Stereo input gain on face-plate (May be used as a "Volume" control on directly connected sources when no Pre-Amplifier is used.)
• Output: *R/L 8 Ohm binding posts (Accepts spade, banana and bare wire connections.)
• Tube Complement: One (1) 5U4g/GZ37 Rectifier, one pair (2) E180F/E280F/D3a Input/Drivers, and one pair of type 45 power tubes.

https://www.toolshedamps.com/euphoria-s ... -amplifier
https://www.head-fi.org/showcase/toolsh ... dht.22593/
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Re: Rør, hvis du tør - ModWright Instruments

Indlægaf kvik » 11. feb 2014, 23:46

ModWright TRYST Headphone Amp ($3000)

ModWright TRYST.jpg
ModWright TRYST.jpg (285.26 KiB) Vist 9771 gange

TRYST: A secret meeting or rendezvous

Enjoy the guilty pleasure of music in your busy day. Escape reality and rendezvous with Tryst. Headphones today allow us to enjoy music in private, escaping the outside world. Anywhere, anytime, you can slip away from your troubles and into the world of music with Tryst. Designed as an all tube amplifier in pure Class A operation with zero feedback, Tryst offers the shortest signal path and most natural reproduction of music. The low noise floor and three dimensional presentation of tubes paint a soundscape that is elegant, simple and true. The warm glow of the Tryst amplifier allows for a private and personal musical experience; a rendezvous in a different world and space.


Features
• Tube Complement: (2) 6922 (7308/6DJ8); (4) 12B4
• Inputs: (2) pairs RCA. Preamp outputs: (2) pairs RCA
• Headphone Outputs: (1) IEM stereo (3.5mm), (1) .25” stereo, (1) 4 pin XLR balanced.
• Power Supply: Outboard, SS rectified.
• Umbilical: 4 ft. long, 5 pin XLR termination.

Specifications
• Frequency response: 20Hz to 50Khz (-.5dB)
• Power: 3W at 18 ohm
• Gain: 30dB
• Fuse: 1.5A slow blow.
• Dimensions:
TPS Power Supply: 8W x 3.75H x 12D
Weight: 16.5 lb.
Tryst Amplifier: 8W x 6.5H x12D
Weight: 16.0 lb.

http://www.modwright.com/products/tryst ... ne-amp.php



ModWright HA 300 Headphone Amp ($8000)

Modwright HA 300.jpg
Modwright HA 300.jpg (534.12 KiB) Vist 7436 gange

Featuring the iconic 300B Single Ended Triode, the HA300 combines the functionality of Headphone and Integrated Amplifier in a 2-box 8 watt design.

The rise of World Class Headphones has driven the creation of Amplifiers to power them. The HA 300 combines my love of Headphones with a passion for Tube Amplifier design.

The 300B tube has long been known to produce the purest and most natural sound. It has gorgeous midrange and lush 3-Dimensionality. I have long been entranced by its sound, but found that 8W was not enough to drive many conventional loudspeaker designs. While I found the midrange to be beautiful, most SET designs I heard (with but a few exceptions, paired with the right speakers) fell short in terms of bass and high frequency response.

When a well designed 300B based amplifier is paired with modern Headphones however, such limitations fall away. Designed to provide 8 watts into 8 ohms, the tube amp is very happy driving the higher impedance loads of modern headphones, ranging from 23 ohm to 60 ohm, up to 600 ohm from brands such as Mr. Speaker, HiFiMan, Focal and Sennheiser for example. This means that the damping factor of the amp is higher, translating to superior low frequency response.

Power is the other factor. When we consider power requirements of even the most demanding of modern headphones, 8W is a lot of power!

When we set out to design a ‘Luxury’ Headphone amp, the 300B tube design just made sense!

Designed as a Class A, Single Ended Triode (SET) amplifier with zero feedback, the HA 300 offers the beautiful midrange of direct heated triodes without sacrificing detail, dynamics or bass response. It features an exceptionally low noise floor and robust power supply.

During the design process, we found ways to make 8 VERY POWERFUL WATTS, by way of a sophisticated external power supply design and over-sized core, hand-wound custom Electraprint Audio, Power and Output transformers. In so doing, we found that not only would the HA300 drive headphones with ease, it was also very capable of driving medium efficiency conventional speakers such as desktop monitors and even floor standers of 93-95dB efficiency and benign impedance curve, well!

The HA 300 shows its true strength and flexibility as the center of a modern integrated stereo system, for use with World Class headphones and speakers.

All HA 300 and PS 300 components are produced in Custom Automotive Finish and a variety of colors. Each unit is custom built to order.


Features
• Tube Complement: (2) 6BM8 Input; (2) 300B Power.
• Power Supply: External, SS rectified.
• Inputs: (1) Pair XLR, (1) Pair RCA, (1) 3mm Mini Jack.
• Passthrough: (1) Pair RCA.
• Speaker Outputs: (2) Pair 5-way binding posts.
• Headphone Outputs: (1) 4-Pin XLR, (1) 1/4” Stereo, (1) IEM (or optional second 4-pin XLR).

Specifications
• Input impedance: 10K.
• Gain: 20dB
• Power: 8W at 8 ohms.
• Frequency: 20Hz-30Khz (-.5dB).
• THD: .4% at 1W.
• HA 300 Dim/Wt: 8“W x 8“H x 12“D / 16lb.
• PS 300 Dim/Wt: 8“W x 5.75“H x 12“D / 20lb.

http://www.modwright.com/products/ha300 ... ne-amp.php
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Re: Rør, hvis du tør - Sideways Eight Audio Labs

Indlægaf kvik » 12. feb 2014, 13:05

Sideways Eight TL-818 Headphone Amplifier/Line Stage (price unknown)

Sideways Eight TL-818.jpg
Sideways Eight TL-818.jpg (121.39 KiB) Vist 9771 gange

Each pair consists of a power supply unit and a signal unit that contains the audio amplification circuitry. Vacuum tube rectification is used because it sounds excellent. Low henry, low DCR filter chokes are utilized so the power supply will be fast and agile. Shunt regulation on the main audio chassis provides an ultra fast low impedance power supply.

The main audio circuit comprises the 6C45Pi triode gain stage actively loaded by a hybrid 12HL7 constant current source. The output is capacitor coupled to the TL-818 autoformer that MagneQuest/Peerless has built exclusively for Sideways Eight Audio Labs.

The TL-818 is a special version of the autoformer that Ercel Harrison, the Chief Designer of Peerless, created in 1946 for MGM Recording Studios.

According to Michael LaFevre of MagneQuest, these autoformers are "labor intensive and very exotic in design, including double C-cores, several winding sections, interleaving between "primary" and "secondary", reversed windings, several different wire gauges, multiple paralleled windings, and custom brackets with lots of machine & finish work." The exemplary design and construction are realized in the listening evaluation: music that is dynamic and "live."

For headphone use, the TL-818 enables user-selectable output impedances for matching different headphones. For example, the exceptional Sennheiser HD-800 works beautifully from the 200 ohm position and the Beyerdynamic T1 is driven using the 500 ohm position. Final Audio Design's lively Pandora Hope VI and hedonistic in-ear monitors such as FAD's FI-BA-SS and JH Audio's Roxanne match well with either the 10 or 4 ohm outputs.

We look forward to sharing with you the wonderful sound of the TL-818 headphone amplifier/line stage. Sideways Eight Audio Labs also welcomes requests from audiophiles for custom creations. Whether it be all silver wire transformers from MagneQuest/Peerless or special all directly heated triode circuits designed around vintage Western Electric iron, we endeavor to bring the best sound quality to the customer.  We have over fifteen years of circuit design experience, using exotic gain/driver tubes such as Western Electric 101L and 102L, 26, 56, WE 396A, WE 417A, and 7788, and directly heated triodes including 300B, 10, 45, 50 2A3, and 845. Please do not hesitate to inquire about what we can do for your dream system!


http://s8audiolabs.com/Headphone-Amp-Line-Stage.php
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Re: Rør, hvis du tør - Phase Style Ltd

Indlægaf kvik » 17. feb 2014, 18:39

PhaSt Headphone SE (€775)

PhaSt Headphone SE.jpg
PhaSt Headphone SE.jpg (220.85 KiB) Vist 9771 gange

PhaSt Headphone SE is a single-ended headphone Class A tube headphone amplifier with a transformer output. The preamplifier is based on ECC88, the output stage on 6H6P double triodes. The anode power is provided by the rectifier tube.

The amplifier can change the output resistance for maximum matching with the headphones with different impedance (15 – 150 and 150 – 600 Om). Moreover, with an adapter the headphone amplifier can be connected to the speakers.

The galvanic isolated transformer output provides additional protection against unexpected situations.

The amplifier can be offered with or without remote control.



Specifications
• Circuit Type: Single-Ended Triode in Class A
• Tubes: 1x ECC88; 2x 6H6P; 1x EZ80
• Capacitors: 3x [email protected]; 2x [email protected]; 3x [email protected]
• Output Power: 140 mW/600 Ω; 180 mW/100 Ω
• Output Resistance: 15-150 Ω / 150-600 Ω
• Input Sensitivity: 350 mV for full output
• Input Impedance: 100 kΩ
• Noise:-98 dB
• Frequency Eesponse: 20 Hz – 50 kHz
• Power Consumption: 15 watts
• Warm-Up Time: 10 minutes
• Power Supply: 220-240 V, 50-60 Hz
• Dimensions (HWD): 13,5 x 24 x 23,5 cm
• Weight: 4.5 kg


http://en.phast.com.ua
http://hifiphilosophy.com/recenzja-phast-headphone-se/
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Re: Rør, hvis du tør - Arcturus Audio

Indlægaf kvik » 17. feb 2014, 18:56

Arcturus 316A Triode Speaker/Headphone Amplifier ($8000)

Arcturus 316A.jpg
Arcturus 316A.jpg (110.33 KiB) Vist 9771 gange

Introducing the new 316A triode amplifier from Arcturus Audio, an amazing tube amp from the minds of George Lenz, Ray Koonce and Roger Modeski. This amplifier uses the unusual and interesting 316A / VT-191 vacuum tube developed for transmitting and radar service in the 1940s. It is a versatile amplifier with balanced and single-ended headphone outputs as well as selectable 8 or 16 ohm speaker outputs with a muting switch. It has a stereo preamp output as well, for connection to a subwoofer, and four stereo input channels. The gain is adjustable in three levels via a switch on the chassis. There is a meter to adjust and monitor the current through the 316A tubes. The amplifier produces about 5 watts per channel with very low distortion.

http://www.tubesusa.com/arcturusaudio.html
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Re: Rør, hvis du tør - SoundTech

Indlægaf kvik » 3. mar 2014, 17:35

SoundTech MC7/9 Electrostatic Headphone System ($2125 for MC7+MC9)

SoundTech MC7.jpg
SoundTech MC7.jpg (134.2 KiB) Vist 9771 gange

Electrostatic headphone system comprised of MC7 Electrostatic Headphone Amplifier and MC9 Electrostatic Headphones. MC9 is based on KingSound H04, with improved diaphragm, earpads, and other acoustic parts, tuned by Kindsound for optimal match with MC7.


MC7 Electrostatic Headphone Amplifier

Features
• Case made of stainless steel chassis, side and top panels in natural bamboo, front panel in gold plated stainless steel
• Neutrik XLR balanced sockets, CMC RCA sockets, UK-RS silver plated contact switch, japanese ALPS potentiometer.
• Customised teflon headphone output socket, gold-plated standard STAX socket contacts.
• Power transformer with Z11 steel, oxygen-free copper wire custom 150W EI transformer.
• BC filter capacitors, Wima and M-CAP coupling capacitors, Vishay and KOA resistors
• VanDamme internal wiring
• Tubes: (2x) Tung-SOL 6SN7, (2x) Mullard 12AX7, and (1x) GE 6X4.
• Delivered in an elegant bamboo fstorage/transportation box

Specifications
• Input voltage: 220VAC/50Hz
• Input impedance: 50k (RCA), 50k x 2 (XLR)
• Frequency response: 10 Hz-22 KHz
• Maximum output voltage: 390V RMS (@1KHz)
• Harmonic distortion: less than 0.01% (@1KHz)
• Amplifier gain: 54dB
• Bias: DC580V
• Power consumption: 70W
• Tubes: 12AX7*2, 6SN7*2, 6X4*1
• Dimensions: 295x180x170mm
• Packing size: 360X265X235mm
• Deadweight: 5.2KG
• Gross weight: 8.2KG

http://www.soundtech-audio.com/mc7.html


MC9 Electrostatic Headphones

Features
• Manufactured by King Sound, tuned for SoundTech
• STAX compatible interface
• Detachable headphone cable
• Black and white color options for ear cup outer shell
• Delivered in an elegant bamboo storage/transportation box

Specifications
• Impedance: 125K
• Sensitivity: 99dB
• Frequency response: 7Hz-41KHz
• Capacitance: 133pf
• Bias: DC 580V
• Headset Weight: 290 grams (without cable)
• Headphone cable length: 3 meters
• Use of the environment: 0-35 degrees Celsius
• Ambient humidity range: less than 90% (but not condensation)
• Packing size: 345X290X85mm
• Package weight: 2.3KG

http://www.soundtech-audio.com/mc9.html



https://littlemart.wordpress.com/deskto ... h-mc7-mc9/
https://www.chinahao.com/product/558613496332/
https://world.taobao.com/item/558613496332.htm
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Re: Rør, hvis du tør - Elekit

Indlægaf kvik » 3. mar 2014, 17:38

Elekit TU-H82 (Kit only $265)

Elekit TU-H82.jpg
Elekit TU-H82.jpg (141.15 KiB) Vist 9771 gange

The Elekit Cubic (TU-H82) hybrid tube amplifier has a small footprint, but can deliver a surprising amount of power. The preamp uses a 12AU7/ECC82 tube that provides smooth sound and warmth. The output is a class-D amplifier for efficient power. The USB input and DAC plus ~8W per channel and headphone output makes it an excellent amp for a desktop audio system. Build Ease and Time: Great instructions and very easy to build. No soldering required!

Features:
• Hybrid of vacuum tube input buffer + D-class speaker amp (AB-class headphone amp built-in)

• DC-controlled electronic volume built-in the amplifier IC.
Therefore the volume deflection between right and left channels at small sound volume is minimized.

• Headphone output

• Built-in USB-DAC for PC connection

• Interlocking the amp power ON/OFF with the PC USB power selectable

• Assembly kit for users to experience the fun of DIY
(A PCB is preassembled, no soldering is required. For assembly, users will need a long-nose pliers and a screwdriver only. (A hex wrench is included.))

SPECIFICATIONS
• Stock tube : 12AU7 (ECC82) x 1pc

• Input terminal :

[INPUT-1] : 3.5mm stereo mini jack (front panel side)

[INPUT-2] : RCA jack (rear panel side)

* INPUT-1 and INPUT-2 are mixed.

[INPUT-3] : USB mini-B connector (rear panel side)

* USB input is cut when INPUT-1 is connected.

• Output terminal :

[Speakers] Gold-plated binding terminal (banana plug usable)

[Phones] 3.5mm stereo (3-pole) mini jack

• Rated output
:
[Speaker output] 6ohm load 8.2W + 8.2W, 8ohm load 6.5W + 6.5W

[Headphone output] 16ohm load 8mW + 8mW

• Rated input : [INPUT-1] 170mV [INPUT-2] 470mV

• Frequency response : 20Hz - 25kHz (-3dB, 6ohm load)

• Residual noise : 120uF (IEC, 6ohm load)

• USB-DAC 32kHz/44.1kHz/48kHz (16bit) / WindowsXP or later, Mac OS X or later

• Power voltage : [Amp] DC 12V
[AC adapter] AC100-240V

• Current consumption :
[No signal]0.2A [Rated output]2A

• Dimensions :
W88 x H90 x D117 mm (including projections)
, W88 x H88 x D88 mm (Chassis only)

• Weight : [Amp] Approx.790g 
[AC adapter] Approx.300g (including a cord)

http://www.elekit.co.jp/en/product/TU-H82
http://www.vkmusic.ca/elekitnew.htm



Elekit TU-8150DX (Kit only $525)

Elekit TU-8150DX.jpg
Elekit TU-8150DX.jpg (89.2 KiB) Vist 9771 gange

TU-8150, being a little brother of TU-8200, is taking over some attractive features from TU-8200 to enjoy difference in sound, such as:
• 3 different connection modes - Ultra linear, Triode, and Pentode - selectable by a jumper plug
• Different tubes for rolling - 6AQ5 and 6V6 series - by using included 6V6 PCB adaptor
• Ample space for larger capacitors to give users upgrade options

So, what are the NEW features of this little fellow? The biggest point we believe is that the amp is designed not just for the stationary music players but also for portable audios. There is a preamplifier stage configured with an Opamp to resolve the problem of short of gain from a portable audio. The Opamp is mounted on an IC socket so that it can easily be exchanged with other commercially available Opamps. Each Opamp gives different taste in sound, so that users can take pleasure in searching a sound of their choice.

Also, portable audio lovers tend to use headphones/earphones, and as a matter of course, TU-8150 is equipped with a headphone jack. Moreover, the power to drive a headphone/earphone can be selected from 3 options by the combination of 2 resistors per channel. Users can select a combination most suitable for their own headphones/earphones.


Features
• Enjoy tube rolling 6005W/6AQ5 or 6V6 with PCB adaptor
• Enjoy OP-amp rolling.
• 3 types of output modes - Ultra Linear , Pentode and Triode.
• Ample space for larger capacitors.
• Headphone terminal equipped

Specifications
• Circuit configuration: Vacuum tube SET Amp
• Output stage UL 2.9W + 2.9W; Pentode 2.9W + 2.9W; Triode 1.6W + 1.6W (8 ohm)
• Output tube: 2x 6005W (standard), or 2x 6V6 (optional)
• Voltage amplification tube: 12AX7 x 1 pcs
• Rated input: 140mV (INPUT-1) 410mV (INPUT-2)*UL connection
• Frequrency response (-3dB): 20Hz - 50kHz
• Residual noise (IHF-A, 8ohm load): 75uVrms
• Input terminal: INPUT-1 (Front) 3-pole mini jack(priority); INPUT-2 (Rear) RCA jack
• Output Terminal: SP output terminal
• Power voltage: AC 50/60Hz (115V and 230V), IEC standard 3P inlet
• Power consumption: 28W * no signal
• Dimensions: W210 x H122.5 x D252
• Weight: Approx 3.5 Kg

http://www.vkmusic.ca/TU-8150.htm
https://www.elekit.co.jp/product/TU-8150



Elekit TU-8200 DX (Kit only $775)

Elekit TU-8200 DX.jpg
Elekit TU-8200 DX.jpg (1.12 MiB) Vist 9771 gange

The TU-8200DX ships with 6L6GC power tubes - but also supports a wide range of other power tubes such as KT66, KT88, EL34, 6550 (and others) with no other modifications. Simply swap power tubes -no need to re-bias. A newly-developed "active automatic bias adjustment function" automatically adjusts the bias for the optimal condition for each tube. NOo more matching tubes or having to manually re-bias when switching tubes.  This function lets you enjoy the best sound of various power tubes without trouble.

Features:
• Comes with 6L6GC power tubes, but also supports wide range of power tubes, such as KT88, KT90, KT666, EL34, etc.
• A newly developed "Active automatic bias adjustment function automatically adjusts the bias for the optimal condition for each tube.
• 3 types of amplifier mode; Ultra Linear, Triode, and Pentode, can be selected simply by moving the jumper plugs on the PCB.
• INPUT1/INUT2 on the back panel, and a headphone jack on the front panel.
• FET ripple filter on board for power B for both right and left channels.
• Overcurrent protection circuit on board.
• Worldwide power transformer to support 4 different voltage environments: 100V, 115V, 200V and 230V (selectable upon assembly).
• Fiberglass PCB with 70um thick copper is used to increase electrical conductivity and dissipate heat.
• Most of the circuit components are mounted on the PCB and the PCB units are connected by cords with connectors so that even beginners can solder and assemble without difficulty.

Specifications:
• Stock tube: 6L6GC x 2pcs, 12AU7 x 2pcs
• Rated output: 6L6GC (UL connection) 8W+8W (All 8ohm loaded)
• 6L6GC (Pentode) 8.2W+8.2W
• 6L6GC (Triode) 4W+4W
• Rated input: 6L6GC (UL connection): 340mV
• Residual noise: 6L6GC (UL connection): 0.90mV (IEC)
• Frequency response: 12hZ - 50kHz (-3dB)
• Input terminal: LINE x 2(LINE1, LINE2)
• 3.5mm stereo mini jack (Common with LINE2, but has a priority to LINE2)
• Output terminal: Speaker output terminal (4-6.3ohm, 8-16ohm: Switching)
• Gold-plated screw type terminal (Banana plug can be used.)
• Power voltage: AC100V 50/60Hz (3P inlet) *115V, 200V, or 230V specifications available.
• Power consumption: 60W (with 6L6GC)
• Dimensions: W252 x H158 x D285mm (including projections)
• Weight: Approx.6.6kg (assembled, excluding the power cord)

Optional:
• USB-DAC (PS-3249)

http://www.vkmusic.ca/TU-8200.htm
http://www.elekit-store.com/shopdetail/ ... ge1/order/
http://www.head-fi.org/t/722633/elekit- ... amp-review



Elekit TU-8600 (Kit w/o tubes $1185, Lundahl version $1785)

Elekit TU-8600.jpg
Elekit TU-8600.jpg (196.75 KiB) Vist 5435 gange

The TU-8600 is a 300B single-ended tube amp kit. In pursuit of great sound quality of the 300B  amp, we have updated and improved the amplification, power, and feedback circuitry. The result is an amp with amazing sound quality, super low noise, and can be used with headphones. The noise level is as low as 1/10 of TU-8300R.


Features

• Power circuit enhancement.. A high efficiency, low magnetic flux leakage R-core is used. The rectifier consists of schottky barrier diodes that require shorter recovery time. This results in a reduction in even negligible noise spikes. The windings of the power transformer include individual windings for the filament heater(A- Power), high voltage (B-power), and bias to stabilize the Negative Feedback (NFB) circuitry(C-Power). In addition, all power is stabilized to reduce residual noise as much as possible. This results in the noise level as low as less than 1/10 of that of TU-8300R.

• Stable NFB circuit for great audio quality.. To make the most of the 300B tubes, the characteristics of various parts and circuits, including OPT, have been improved. The NFB is applied to the cathode of the 300B by the third winding of the OPT as well as to the voltage amplifying stage. Consequently, the overall NFB is minimized as well as the chance for the transient response.

• New active automatic bias adjustment adopted.. For the 300B tube bias, the power supply is equipped separately, and a ”New active automatic bias” is used where the amp detects plate current and automatically adjust the grid voltage. This design earns TU-8600 the priviledges of both self-bias and fixed bias. In addition, current detecting circuit is moved from the cathode side to the B-power side resulting in even better sound quality.

• Driving 300B tubes to full power.. A very orthodox design is used for the voltage amplifying stage to bring out the outstanding characteristics of the famed 300B tubes. Of special note is that 12AU7(ECC82) is used in parallel for the 2nd stage to drive the 300B tubes to full power- resulting in 200Vp-p without clipping.

• Tube-friendly design.. Warm-up time for directly-heated and indirectly-heated tubes largely differ. In most designs, amp power-up starts heating both the directly heated 300B tubes (fast warm-up) as well as the indirectly-heated 12AU7 and 12AX7 (slower warm-up). In TU-8600, the 300B tubes are heated after the indirectly-heated tubes have warmed up. A very tube-friendly design that will not overload tubes that have not warmed up fully.

• Output level selection for headphones.. For the headphone, you have 4 selections of output level to match your headphone.
• Ample space for larger coupling capacitors.. Capacitors can have a big effect on sound. TU-8600 uese high quality conductive polymer hybrid electrolytic caps and polypropylene film caps. For those who wish to use other higher quality caps, there is ample space provided on the PCB for mounting larger caps.

• Safety tube cover


Specifications
• Model: TU-8600
• Circuit configuration: Vacuum tube stereo power amplifier
• Output stage: 300B Class A. single ended, active bias adjustment
• Voltage amplification stage: 1st stage - 12AX7 (ECC83)  + parallel drive 12AU7 (ECC82)
• Heater, filament power: DC- power (LDO used)
• B-Power: MOSFET + BJT ripple filter (for L and R separately)
• Rated input: 320mV rms
• Frequrency response (-3dB):
• Residual noise (IHF-A, 8ohm load): 36uVrms
• Input terminal: RCA jack stereo, 1 line
• Output Terminal: Gold-plated binding terminal (Banana plug)
• Headphone impedance: 8-600ohm , unbalanced
• Power voltage: 110-120V AC OR 230V AC 50/60Hz (IEC standard 3P inlet)
• Power consumption: 90W
• Dimensions: W385 x H217 x D325
• Weight: Approx 12Kg


Options
• Standard version $1185
• TU-8600 Lundahl Version $1785
• Elrog 300B with TU-8600 Lundahl version $2985
• Various other upgrade options available (resistors, capacitors, tubes, PCB)


http://www.vkmusic.ca/TU-8600.htm
http://www.elekit.co.jp/en/product/TU-8600


Elekit within the EU: http://getaudio.eu/en/price-list-and-ordering/
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Re: Rør, hvis du tør - Garage1217

Indlægaf kvik » 3. mar 2014, 17:47

G1217 Project Starlight (Kit $150, Built $170, alu-chassis +$40)

G1217 Project Starlight.jpg
G1217 Project Starlight.jpg (123.53 KiB) Vist 9771 gange

Tube Headphone Amplifier - Optimized for headphones 16-300 Ohms

What the heck is Project Starlight? Well in short and to the point, she was designed to kick sand in the face of the affordable overseas offerings and other affordable tube amplifiers. Having to purchase an amplifier and then replace the majority of the parts to work properly should not sit well with anyone (we know the popular cheap designs well as we used to modify and fix them on a regular basis). So we went to the drawing board to see what we could do to not just make a quality affordable hybrid, but to make a damn fine hybrid that was ready to sing out of the box. Starlight is a Tube / Opamp hybrid capable of rolling opamps as well as countless 6 & 12V dual triode tubes. Stock output stage features quad 4562's and she sings like an angel. We even gave her Easy Set LED bias and a fully dedicated tube heater power supply supporting up to 1A! That means power hungry tubes such as the 12bh7, 6n6p and 6n30p are no problem. In fact Starlight outclasses and outfeatures EVERY SINGLE hybrid on the market in this price range and even well above its price point giving you the ability to tweak and tune to your desire. Best of all, no need to frankenstein her with modifications. The parts you may want to play with later on such as opamps and tubes are easy to change without soldering!


Features of Starlight:
• Easy Set bias via LED indicators. No need to use a multimeter anymore when rolling tubes! Access from the side of the amp, no removal of top cover
• Easy access to bias trimmers. You can use a jewelers screwdriver to dial in the bias through the top cover, no need to remove the cover to set
• Three output impedance settings to dial in your Starlight
• Revised protection circuit protects your headphones and audio gear
• 1A dedicated heater power supply for current hungry tubes
• Ability to run a pair (one per channel) or quad opamps (two per channel) for increased output
• Ability to roll several opamps to see what you like better
• Designed in the U.S. & Netherlands. Kitted or Built in the U.S. depending on how you order / 5 YEAR WARRANTY ON G1217 BUILT AMPS!
• All parts sourced in the U.S. From reputable distributors, NO FAKE COUNTERFEIT PARTS, CAPACITORS OR RESISTORS!
• Only top quality components used, such as Bourns pro audio potentiometer, Bourns trimmers, Low noise Vishay/Dale RN, CMF and CPF 1% resistors, Nichicon & Wima capacitors, Neutric phono jack. Ruggedized PCB RCA jacks, Rugged 5a power switch ETC…
• Beautiful piano gloss black .096 thick double sided PCB with gold wash - top and bottom ground planes. Will not bend or flex while inserting a tube
• Turn on / off protection for your headphones and audio gear
• Fused with reverse polarity protection
• Chassis hardware features all stainless steel allen bolts, washers and nuts. Stand-offs are aluminum
• Each factory built amplifier is meticulously hand built and tested prior to shipping. Solder work is outstanding and clean with no flux or fingerprints left on the board. Pride in workmanship is evident from every angle of this amp. What you see in photos is the quality of build you will get!

For Advanced Tuners:
• Input capacitor section is drilled for multiple capacitor footprints. 2, 2.5, 3.5, 5 or 7.5mm spacing available
• Output capacitor section is drilled for 7.5mm
• Power supply capacitor section is drilled for 7.5mm
• Variable output resistance, selectable from 2.5 to 70ohm

Actual Project Starlight measurements:
• Opamp output stage / quad LM4562
• Power consumption: 7.2W peak.
• Power supply: 24VDC (0.3A peak)
• Input Resistance: 40k
• Input Sensitivity (6N23): 270mV (dependent on tube)
• Gain: 20dB (dependent on tube) Changed from the original higher 26dB specification
• Max Output voltage (no load): 7Vrms at 120ohm
• Output Resistance: Selectable 2.5, 70
• Frequency Response: 15Hz – 80 KHz (-0.5dB) with 32ohm load
• Frequency Response: 4Hz – 230 KHz (-3dB) with 32ohm load
• Signal to Noise ratio: 91dBA (dependent on tube)
• Crosstalk: -87dB (dependent on tube and in most all cases, better!)
• THD: > 0.015% (dependent on tube)
• Suitable for: 16-300ohm Headphones
• Dimensions: 5.75L X 5W X 2.75H in inches
• Weight: Acrylic Chassis .65lb (without power supply) | Aluminum Chassis 1lb (without powers supply)

http://www.garage1217.com/garage1217_di ... rs_007.htm



G1217 Project Sunrise III (Kit $215, Built $250, alu-chassis +§40)

G1217 Project Sunrise III.jpg
G1217 Project Sunrise III.jpg (311.63 KiB) Vist 9771 gange

Tube Headphone Amplifier / Pre-Amp - Optimized for headphones 32-300 Ohms

Project Sunrise III... Where to start with this tried and tested beauty? Project Sunrise was our first amplifier design. She has sold all over the globe and has been reviewed, tested and loved for years. She was the first in a series of tweak-able hybrids which simply give so much more vs. the competition. She is what started all this madness for us! In 2012 we started offering the version II of this design pushing what we could do with the design further. Then in late 2013, beginning of 2014, Sunrise III arrived adding some nice features yet retaining the Sunrise sound. If you are looking for an amplifier that can really deliver specifically into lower impedance headphones then Sunrise III is for you. Overall an outstandingly musical amplifier with great power.


New features of Sunrise III
• 3 Output resistance settings
• Revised layout
• Line-out bypass (when headphones are plugged in)
• Variable input gain with easy to swap gain module
• Revised protection circuit with LED indication

General Features of Project Sunrise III:
• Designed in the U.S. & Netherlands. Kitted or Built in the U.S. depending on how you order / 3 YEAR WARRANTY ON G1217 BUILT AMPS
• All parts sourced in the U.S. From reputable distributors, NO FAKE COUNTERFEIT PARTS, CAPACITORS OR RESISTORS!
• Only top quality components used, such as Bourns pro audio potentiometer, Bourns trimmers, Low noise Vishay/Dale RN, CMF and CPF 1% resistors, Nichicon - Roederstein capacitors, Fairchild IRL510 Mosfets & top quality LM317AT’s used, Neutric phono jack. Ruggedized PCB RCA jacks, Rugged 5a power switch ETC… RCA's, tube socket, phono jacks and even jumpers are gold plated
• Beautiful piano gloss black .096 thick double sided, 2oz PCB with top and bottom ground planes & gold wash. • Will not bend or flex while inserting a tube!
• 1A Dedicated heater power supply, no piggy-backing off LM317's which is a cheap, non desirable way of powering the tube heaters
• Turn on / off protection for your headphones and audio gear
• Supports a wide range of 6V or 12V tubes with voltage selection
• Built in test points to easily and quickly dial in bias or dial in bias via the Easy Set LED indicators!
• Class A, No overall Feedback
• Fused with reverse polarity protection
• Chassis is beautifully laser cut and serialized.
• Chassis hardware features all stainless steel allen bolts, washers and nuts. Stand-offs are aluminum along with top cover thumb screws
• Each factory built amplifier is meticulously hand built and tested prior to shipping. Solder work is outstanding and clean with no flux or fingerprints left on the board. Pride in workmanship is evident from every angle of this amp. What you see in photos is the quality of build you will get!
• An RGB LED is available under the tube which can allow you to turn the tube ANY color you desire via 3 trimmers, or cover the LED so all that you see is the glow of the tube!

For Advanced Tuners:
• Input capacitor section is drilled for multiple capacitor footprints. 2, 2.5, 3.5, 5 or 7.5mm spacing available
• Output capacitor section is drilled for 7.5mm
• Power supply capacitor section is drilled for 7.5mm
• Input capacitors can be bypassed for optimal sound (can result in a scratchy sound only when adjusting volume)
• Variable output resistance, selectable from 1, 32 or to 69ohm

Actual Project Sunrise Measurements:
• Single ended OTL class-A output stage.
• Power consumption: 13W continuous 19W peak
• Power supply: 24VDC (0.55A cont, 0,8A peak)
• Input Resistance: 11k / 31kOhm gain module dependant
• Input Sensitivity (6N23): 270mV (dependent on tube)
• Gain: 14-26dB (dependent on tube)
• Max Output voltage (no load): 5.4V
• Output Resistance: Selectable 1, 32 or 69Ohm
• Frequency Response: 4 Hz – 350 KHz (-3dB) with 32 Ohm load
• Signal to Noise ratio: 91dBA (dependent on tube)
• Crosstalk: -88dB (dependent on tube)
• THD: > 0.013% (dependent on tube)
• Suitable for: 32 - 300 Ohm HeadphonesTubes
• Dimensions: 6.25L X 4.75W X 2.75H in inches
• Weight: Acrylic Chassis .89lb (without power supply) | Aluminum Chassis 1.24lb (without power supply)

http://www.garage1217.com/garage1217_di ... rs_002.htm



G1217 Project Horizon III (Kit $240, Built $275, alu-chassis +$40)

G1217 Project Horizon III.jpg
G1217 Project Horizon III.jpg (45.46 KiB) Vist 9771 gange

Tube Headphone Amplifier / Pre-Amp - Optimized for headphones 120-600 Ohms

Project Horizon is a sister amplifier to Project Sunrise III even sharing the same PCB. Understanding the want and need for a version specifically built for high impedance headphones, Project Horizon was born. Horizon costs a bit more than Sunrise III as it takes quite a few more parts and a much higher voltage power supply. Horizon is quite a beast and just like Sunrise III, she is very musical and offers loads of adjustability combined with the ability to roll a ton of tubes. Horizon is a real staple to our lineup and also has been reviewed and loved globally!


New features of Horizon III:
• Revised layout
• Line-out bypass (when headphones are plugged in)
• Variable input gain with easy to swap gain module
• Revised protection circuit with LED indication

Features of Horizon:
• Easy Set bias via LED indicators. No need to use a multimeter anymore when rolling tubes! Access from the side of the amp, no removal of top cover
• Easy access to bias trimmers. You can use a jewelers screwdriver to dial in the bias through the top cover, no need to remove the cover to set
• Access to the 6/12V jumper through the top cover, no need to remove the top
• Output impedance selection can now be set from each side of the chassis
• Line output for pre-amp use
• Revised protection circuit protects your headphones and audio gear
• Revised circuitry overall
• Designed in the U.S. & Netherlands. Kitted or Built in the U.S. depending on how you order / 3 YEAR WARRANTY ON G1217 BUILT AMPS!
• All parts sourced in the U.S. From reputable distributors, NO FAKE COUNTERFEIT PARTS, CAPACITORS OR RESISTORS!
• Only top quality components used, such as Bourns pro audio potentiometer, Bourns trimmers, Low noise Vishay/Dale RN, CMF and CPF 1% resistors, Nichicon Roederstein capacitors, Fairchild IRL510 Mosfets & top quality LM317HV’s used, Neutric phono jack. Ruggedized PCB RCA jacks, Rugged 5a power switch ETC… RCA's, tube socket, phono jacks and even jumpers are gold plated
• Beautiful piano gloss black .096 thick double sided, 2oz PCB with top and bottom ground planes & gold wash. vWill not bend or flex while inserting a tube!
• Dedicated heater power supply, no piggy-backing off LM317's which is a cheap, non desirable way of powering the tube heaters
• Turn on / off protection for your headphones and audio gear
• Supports a wide range of 6V or 12V tubes with voltage selection
• Built in test points to easily and quickly dial in bias or dial in bias via the Easy Set LED indicators!
• Class A, No overall Feedback
• Fused with reverse polarity protection
• Chassis is beautifully laser cut and serialized.
• Chassis hardware features all stainless steel allen bolts, washers and nuts. Stand-offs are aluminum along with top cover thumb screws
• Each factory built amplifier is meticulously hand built and tested prior to shipping. Solder work is outstanding and clean with no flux or fingerprints left on the board. Pride in workmanship is evident from every angle of this amp. What you see in photos is the quality of build you will get!
• An RGB LED is available under the tube which can allow you to turn the tube ANY color you desire via 3 trimmers, or cover the LED so all that you see is the glow of the tube!

For Advanced Tuners:
• Input capacitor section is drilled for multiple capacitor footprints. 2, 2.5, 3.5, 5 or 7.5mm spacing available
• Output capacitor section is drilled for 7.5mm
• Power supply capacitor section is drilled for 7.5mm
• Input capacitors can be bypassed for optimal sound (can result in a scratchy sound only when adjusting volume)
• Variable output resistance, selectable from 1.5, 35 and 120ohm

Actual Project Horizon Measurements
• Single ended OTL class-A output stage.
• Power consumption: 13W continuous, 19W peak.
• Power supply: 48VDC (0.55A cont, 0,8A peak)
• Input Resistance: 11k / 31kOhm gain module dependant
• Input Sensitivity (6N23): 270mV (dependent on tube)
• Gain: 20dB (dependent on tube) Changed from the original higher 26dB specification
• Max Output voltage (no load): 14.1Vrms at 300ohm
• Output Resistance: Selectable 1.5, 35 or 120ohm
• Frequency Response: 10Hz – 160 KHz (-0.5dB) with 32ohm load
• Frequency Response: 4Hz – 400 KHz (-3dB) with 32ohm load
• Signal to Noise ratio: 91dBA (dependent on tube)
• Crosstalk: -88dB (dependent on tube)
• THD: > 0.013% (dependent on tube)
• Suitable for: 120-600ohm Headphones
• Dimensions: 6.25L X 4.75W X 2.75H in inches
• Weight: Acrylic Chassis 1lb (without power supply) | Aluminum Chassis 1.34lb (without power supply)

http://www.garage1217.com/garage1217_di ... rs_003.htm



G1217 Project Solstice (Kit $215, Built $250, alu-chassis +$40)

G1217 Project Solstice.jpg
G1217 Project Solstice.jpg (490.91 KiB) Vist 9771 gange

Optimized for Headphones 32 - 600ohm

Solstice is a smooth, compact desktop amplifier with some very cool features and excellent power output. There is not a single tube amplifier on the market (besides ours) with this wide of a feature set that is even close in price to Solstice. In short, Solstice is a unique - high value amplifier that will suite even the most demanding tube lover.

Project Solstice is a low voltage amplifier. It can still reach 1W output power. It is in the same ‘voltage range’ as the Sunrise and Starlight amplifiers but has the output stage of the Ember/Polaris. This is a ‘basic’ amplifier with less features than the higher priced models but of course does have traits the other models don’t have.The Solstice does have autobias (like the Ember) but has manual heater selection (like all the other models). It doesn’t have the 3 colour LED under the tube base like Sunrise/Horizon and Ember but you can choose a single colour LED that can be replaced if desired. The LED has a fixed light level but can be switched on/off via a jumper. It also doesn’t have the input cap bypass jumpers nor does it have line-out sockets. The output resistance can be set in 3 steps. Another feature is that it can handle an even wider range of tubes when the socket adapter is used. The amp also has a special jumper so tubes like the 12SN7 can be used as well.


Features:
• Auto bias. Simply plug in a tube from a long list of 6 & 12V dual triodes and it will bias itself
• Bias continuously adjusts itself so ageing of a tube is constantly corrected, within limits of course
• Manual heater voltage selection. Easy to adjust between 6 and 12v tubes by changing a jumper
• Startup protection circuit with thermal shutdown
• Advanced cooling design to keep temps nice and low
• Three output resistance settings from 0.1, 31 and 68 Ohm
• Easy to change Input Attenuation Module for tweaking usable volpot range
• Very efficient, low power consumption, low temperatures
• Awesome choice for headphones from 32-600 Ohm but can also drive 16 Ohm headphones
• Lots of headroom and more than enough output power at over 1W, depending on headphone and settings
• Comes with tube and power supply. Plug in your source to the RCA jacks, plug in your headphones and fire her up!

Specifications:
• Solid state output stage
• Non overall feedback - triode voltage gain stage
• Power supply: 24VDC (0.15A cont, 0.40A peak)
• Input Resistance: 61kO With default 50k gain module
• Input Sensitivity (6N23): 0.8V or 1.6V (dependent on gain setting and used tube)
• Gain: 12dB (selectable and dependent on tube)
• Max Output voltage: 7Vrms at 300R
• Output Resistance: Selectable 0.1R, 31R or 68R
• Frequency Response: 13Hz – 80 KHz (-0.5dB) with 32R load
• Frequency Response: 4.5Hz – 300 KHz (-3dB) with 32R load
• Signal to Noise ratio: 98dBA (dependent on tube)
• Crosstalk: -93dB (dependent on tube)
• THD: > 0.10% (dependent on tube)
• Suitable for: 16-600R Headphones, 32-600R recommended
• Dimensions: 5.75L X 5W X 2.75H in inches
• Weight: Acrylic Chassis .65lb (without power supply) | Aluminum Chassis 1lb (without powers supply)

http://www.garage1217.com/garage1217_di ... rs_005.htm



G1217 Project Ember II (Kit $300, Built $350, alu-chassis +$40)

G1217 Project Ember II.jpg
G1217 Project Ember II.jpg (1.67 MiB) Vist 9771 gange

Tube Headphone Amplifier and Pre-Amplifier.. Project Ember is our flagship amplifier that can power virtually any headphone available and power them with authority.

Features:
• Auto bias. Simply plug in a tube from a long list of 6 & 12V dual triodes and it will bias itself
• Bias continuously adjusts itself so ageing of a tube is constantly corrected, within limits of course
• Auto heater selection. Plug and play with a 6 or 12V tube and the heater voltage arrangement will be automatically set
• Startup protection circuit with thermal shutdown
• Line out disconnect for the pre-outs when headphones are plugged in (can be changed easily via two solder jumpers)
• Pre-amp output so it can double as a volume controlled tube buffer
• Advanced cooling design to keep temps nice and low
• Three output resistance settings from 0.1, 35 and 120 Ohm
• Input capacitor bypass possibility for more tuning options
• Selectable gain / input attenuation via a quick change module or two jumpers
• Very efficient, low power consumption, low temperatures
• Awesome choice for headphones from 32-600 Ohm but can also drive 16 Ohm headphones easily
• Lots of headroom and more than enough output power up to 2.4W, depending on headphone and settings
• Comes with tube and power supply. Plug in your source to the RCA jacks, plug in your headphones and fire her up!
• Not an audiophile feature, but you can change the under tube LED color to anything that you like via the RGB LED adjustment. Correct, we do not even force you to like the same color we do

Specifications:
• Solid state output stage
• Non overall feedback - triode voltage gain stage
• Power consumption: 5W continuous, 15W peak
• Power supply: 48VDC (0.10A cont, 0.32A peak)
• Input Resistance: 20k or 40k depending on gain setting
• Input Sensitivity (6N23): 0.8V or 1.6V (dependent on gain setting and used tube)
• Gain: 20- 26dB (selectable and dependent on tube)
• Max Output voltage: 15.7Vrms at 300Ohm
• Output Resistance: Selectable 0.1, 35 or 120Ohm
• Frequency Response: 3Hz – 65 KHz (-0.5dB) with 32Ohm load
• Frequency Response: 1.5Hz – 190 KHz (-3dB) with 32Ohm load
• Signal to Noise ratio: 92dBA (dependent on tube)
• Crosstalk: -89dB (dependent on tube / in most all cases much better!)
• THD: > 0.010% (dependent on tube)
• Suitable for: 16-600ohm Headphones
• Dimensions: 6.5L X 5W X 2.75H in inches
• Weight: Acrylic Chassis .78lb (without power supply) | Aluminum Chassis 1.2lb (without power supply)

http://www.garage1217.com/garage1217_di ... rs_004.htm
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Re: Rør, hvis du tør - Nixie

Indlægaf kvik » 3. mar 2014, 17:56

Nixie Mini Dual Triode Headphone Amp (Kit €160))

Nixie Mini Dual Tube Headphone Amp.jpg
Nixie Mini Dual Tube Headphone Amp.jpg (87.85 KiB) Vist 9771 gange

With the solgan "Wolf in sheep's clothing" Mr. Nixie presents a very tiny tube headphone amp but it's really a deep me, even if it's small outline footprint of only 85 x 85 mm. 2 pcs. 6N28B-V miniature dual triodes from Russian military surplus operate as preamplifier stages to a stereo Class A MosFet impedance transformer stage with 300 mA idle current each. These triodes are specially designed to operate on low anode voltages, have an ultra long life, less microphonic noise and are shock proof. BTW, Pete Millet's "Starving Student" amplifier was the template for this improved circuity. Compared with many similar amplifiers from Chinese production, which operates the triodes with only 1/10 of the suggested anode voltage, the tubes in this tiny amplifier operates with 45 V and therefore exact within their specifications; and this you'll just hear. The measuring datas of the first prototype samples approve the listening testings: light, soft and with a warm sound. And this tiny amplifier can provide real power if needed without sounding annoying or nasty. The frequency response is nearly flat, it doesn't matter if the load is 150 or 32 ohm, the internal resistance is below 1 ohm, the THD are typically for a tube with a lot of second harmonics (K2). They only rise over 5 % even at the output's limit, and below this threshold they decrease linear below 0.1 %.

Specifications
• DC-Connection: 12...15 VDC 2.1/5.5 mm inner "+", fused by Polyfuse
• Headphone connection: 6.3 mm NEUTRIK stereo jack
• Line input: 2 x RCA
• Slow turn on of the filament voltages
• Input impedance: 4.7 kohm
• Amplification: ca. 14 dB
• Min. input level for full output power: ca. 770 mV (Volume set to maximum)
• Min. headphone impedance: 25 ohm
• Power consumption: ca. 9 VA
• Dimensions (with heat cover) W x D x H: 85 x 85 x 65 mm
• Weight: 190 g
• Optional: Behringer UCA-202 USB-Audio-Interface

http://nixiekits.eu/product.php?key=headphone_amp
AKG K240DF | K340 | K400 \\ VE Zen 2.0 | Myst Nail 2 | Spiral Ear 3-way Ref \\ Zigis Trīsstūris | Eufonika H12G \\ Tento PortaDAC \\ Allo DigiOne
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Indlæg: 4095
Tilmeldt: 28. jul 2011, 01:27
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