Rør, hvis du tør



Re: Rør, hvis du tør - Cypher Labs

Indlægaf kvik » 28. jan 2014, 13:51

Cypher Labs Sustain84 ($1200)

Cypher Labs Sustain84.jpg
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Featuring NOS ECL84 tubes in a class A single ended design, the Cypher Labs Sustain84 (model CLS84) is a headphone enthusiast’s dream. Designed specifically for headphone amplification, the Sustain84 has a pure black background. The power band is suitable for the most sensitive IEM’s and the most demanding planar magnetic headphones. We chose Z11 Output Transformers from Japan as well as Nichicon Electrolytic Capacitors and Cardas RCA input connectors. We incorporated a specially designed switching power supply and quality fuse for ultra low noise. Many power amps feature a headphone output, but the Sustain84 is an Uncommon amplifier of headphones.

Specifications:
• Tube: ECL84 (6DX8 tubes may be substituted by the customer)
• Input: RCA Jacks
• Input Impedance: 10K ohms
• Input Sensitivity: 700mV
• Output: 6.3mm
• Output Impedance: 8 to 600 (Japan Z11-EI48 Output Transformers)
• Output voltage: 14Vp-p
• Headphone power: [email protected] ohms; [email protected] ohms; [email protected] ohms; [email protected]
• Low gain 2db, High gain +17db
• Frequency Response: 30-30Khz (+-1db)
• Auto-switching AC Voltage: 100-250V AC
• Power Consumption: 20W
• Standard IEC input with fuse protection (2A Fuse)
• Weight: 2.5kg
• Dimensions: 225mm (w) x 116mm (d) x 113mm (h)

https://cypherlabs.com/products/sustain84/



Cypher Labs Prautes ($3900)

Cypher Labs Prautes.jpg
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The PRAUTES is a vacuum tube headphone amplifier that also functions as a line stage amplifier and low power speaker amplifier, thus providing great flexibility in limited spaces. It was created as a heritage piece—something that can last for decades. Some of the parts (like the switches) are sourced from military aircraft, made to withstand high stress. All the external case and knobs parts are custom-made only for our products.

PRAUTES – What does it mean? PRAUTES is defined by Aristotle as the middle way between passive acceptance and unreasonable anger. Often translated to English as ‘meek’, it is more correctly understood to be a reference to proper understanding and accurate action. Thus, if you are angry—it is for the right reason; if you are subdued—it is the correct response. The PRAUTES amplifier seeks to do just that—present music in a manner that delivers subtlety, image, detail, and excitement, all in an accurate manner that duplicates the live experience

The PRAUTES uses a 12AU7 tube gain stage to drive a pair of 50L6 or 25L6 tubes in push-pull mode. The serial number on the back will indicate which tube type is used. This provides for more power than needed for almost all headphones—and can drive high efficiency speakers with about 2 watts. Five separate output impedances are provided to match listening equipment including 8 ohm speakers, standrad headphones, high impedance headphones and In-Ear-Monitors.

The PRAUTES is produced in collaboration between Coffman Labs and Cypher Labs.


Operation
• Each of the four inputs are independent. Connect your line sources such as CD player, TV, or iPod to any of the four inputs. Since there are no digital switches (which can degrade the audio signal), it is recommended that unused devices connected to the PRAUTES be turned down or off.
• The headphone outputs and speaker outputs are independent. Only the selected output is used. High efficiency 8 ohm speakers work best.
• The line output is appropriate for powered speakers, power amplifiers, or any other device with a line input that has an input impedance of 100K ohms or greater. Used to supply a line output to another amplifier, the PRAUTES amplifier acts like a pre-amplifier. It is appropriate to connect a turntable the the PRAUTES amplifier and then connect to a power amplifier. Short cables are best.

Controls
• Volume control: This heritage quality finely manufactured potentiometer controls the headphone, speaker and and pre-amp line outputs
• Input Switch: Selects one of four line inputs. Input impedence on each input is 100KΩ. Tip: Use the ‘Mute’ position when changing input cables
• Impedance (Ω) Switch: Headphone and speaker settings
300 Ω: High impedance headphones like Sennheiser 800.
100 Ω: Standard for many Studio headphones
32 Ω: Standard consumer headphones
8 Ω: Speakers or very low impedance headphones.
IEM: In-Ear-Headphones
• Bass Boost Switch: Provides approximately +3dB boost with a variable roll-off point. The bass boost circuit is a subtle increase in bass response. This control eliminates the high phase shift that occurs with typical tone controls. The boost amount is the same for all settings, but the frequency point of the boost ranges from 47Hz to 31Hz. This allows for very fine tuning of the bass response. Match this setting in coordination with the Impedance Switch to match the selected headphone, type of music chosen and your preferences.
• Output Switch: Selects output type
SPK: Output to rear speaker jacks—use 8 Ω impedance.
XLR: Output to balanced XLR jacks – 4 pin XLR for most headphone types (Audeze, etc.)
Mute: No speaker output—use for independent line output mode.
1/4″: Output to 1/4″ (6mm) Headphone jack.
1/8″: Output to 1/8″ (3.5mm) Headphone jack.

Specifications
• Gain: Line Stage: approximately 16dB. Headphone power: > 1 Watt, depending on load
• Bass Boost: 31, 36, 41, or 47Hz boost of approximately 3dB (6dBm). No extra active circuit elements are engaged!
• Ground Lift Switch: Use only if there is ground loop hum in your AC supply wiring.
• Tube Complement: 4x 50L6 or 25L6 for the output stage, 2x 12AU7 for the input/line stage. Annodized tube shields are provided to cover the tubes. The use of the tube shields is optional.
• Frequency Response: 20Hz to 20KHz +.2dB to -.75dB into matched resistive load (can vary slightly based on tubes installed)
• Dimensions: 12 ½” D x 7 ¾” H x 9 ½” W / cm D x cm H x cm W
• Weight: 16 pounds / 7.3 kilograms (not including AC power cable)
• AC Power: Depending on destination country the PRAUTES amplifier voltage setting is preset at the factory for 120v or 240v operation.

https://cypherlabs.com/products/prautes/
https://cypherlabs.com/product/prautes- ... amplifier/



SUPPLEMENTARY NOTE

Cypher Labs Prautes was originally listed here as Coffman Labs G1-A. The amplifier since beame a joint effort, with a new name (Prautes). How the two differ, I am not sure, but below are some links related to G1-A.

Coffman Labs G1-A
https://www.facebook.com/CoffmanLabs
http://www.manualslib.com/manual/883462 ... -G1-A.html

50L6 Preamp/Headphone Amp Kit
https://www.elliottwall.com/2015/10/19/ ... mplifiers/

Coffman Labs H1-A
http://www.head-fi.org/t/663979/coffman ... ull-review
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Re: Rør, hvis du tør - iFi Audio

Indlægaf kvik » 28. jan 2014, 15:47

iFi Pro iCan ($1800)

iFi Pro iCan.jpg
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iFi is proud to present its flagship Professional ‘Pro’ series. The first product in the range is the Pro iCAN – a studio-grade headphone amplifier AND audiophile line-stage. Inside beats ‘two hearts’ as there is are two individual Solid-State and Tube amplification sections – selectable on the go. There is nothing quite like the Pro iCAN; literally.

The Pro iCAN will for many, be used as a top-of-the-line, headphone amplifier that drives anything and everything – from CIEMs through to the most difficult to drive headphone ever made, the AKG K-1000. Further, Gain is adjustable from 0dB/9dB/18dB. The Pro iCAN can output >10V in Single-Ended mode and 20V in Balanced-mode. The 20V mode is equivalent 100W into a 4 Ohm speaker. So the Pro iCAN can drive almost any headphone into very hard-clipping (protection circuitry typically kicks in under such circumstances).

The Pro iCAN has at the core, a Japan Alps motorised rotary volume potentiometer. This is the ‘6-Track’ version with 4 tracks used for a true balanced volume control. This is the litmus test for any amplifier to see if it is truly balanced, or operates internally in single-ended mode. Those using ‘2-Track’ volume controls may offer balanced in and out, but are not true balanced designs. The Pro iCAN however is fully-balanced from beginning to end.

In terms of flexibility, 3 single-ended and 1 balanced inputs and 1 balanced and 1 single-ended output, the Pro iCAN is a full-function audiophile line-stage that is at home in many expensive hi-fi systems. Its user-selectable Solid-State/Tube amplifiers remain and so are 3D Holographic˚ for Speakers and XBass˚ for ultra-fidelity home audio systems.

Compared to high-end headphone amplifiers, the tube stage of the Pro iCAN is different in two-ways. First, we don’t use good-quality 6922s or similar. Instead we use the very best; General Electric 5670 which is the premium variant with a different pinout. Second and just as important is the circuit design. Unlike other headphone amplifiers that have the same circuit and just switch in/out the tube section, the Pro iCAN is the very first of its kind that has two individual input circuits – one tube and one Solid-State. This results in the best sonics of both worlds because the signal path is the shortest and there is no compromise to ‘shoe horn’ the tubes into an already existing solid-state circuit.

The Solid-State amplification section of the Pro iCAN is just as seriously executed as the Tube amplification section. The amplifer audio circuit is a development of iFi’s revolutionary ‘TubeState’ design. It is fully discrete, fully-balanced with either tube or J-FET input switchable, bipolar second stage and MOSFET-buffered bipolar class A Power stage (with Class AB for low impedance headphones at very high levels). The resulting circuit may be best described as ‘tri-brid’ where each device is used to greatest sonic advantage while minimising any drawbacks. Furthermore, the circuit is pure DC coupled to avoid using any sonically-degrading coupling capacitors.

The Pro iCAN employed TDK Japan-made C0G type capacitors and Vishay MELF type thin film resistors. These are complimented by Panasonic Japan-made ECPU Film Capacitors explicitly designed for audio use with extremely low distortion (<0.00001% @ 1V/10kHz). We employed ELNA Japan-made Silmic II capacitors for the power supplies. These use special silk fibre paper for the isolating barrier resulting in decreased odd-order distortion and reduced microphonics/mechanical resonances.

As one can see, the Pro iCAN despite its ‘desktop’ footprint is absolutely chocked full of premium components yet with a 4-layer pcb, has the ultimate topology in signal path layout/grounding. There is just no more ‘real estate’ left to develop. It truly is deserving of the iFi flagship mantle.



Specifications:
• Gain: 0dB, 9dB and 18dB user-selectable
• Frequency Response: 0.5Hz to 500kHz(-3dB)
• Total Harmonic Distortion (THD, Balanced/Single-Ended): Solid-State: ≤0.0015% / ≤0.005%; Tube: ≤0.002% / ≤0.005%; Tube+: ≤0.012% / ≤0.2%
• Signal-to-Noise Ratio (SNR, Balanced/Single-Ended): >147dB(A) / > 137dB(A)
• Output Power (16Ω, Balanced/Single-Ended): >14,000mW / >4,800mW
• Output Voltage (600Ω, Balanced/Single-Ended): >23V / >11.5V
• Input Voltage (Pro iCAN): DC 9V/6.7A – 18V/3.35A
• Input Voltage (iPower Plus): AC 85 – 265V, 50/60Hz
• Power Consumption: ≤ 22W idle, 50W max.
• Dimensions: 213(l) x 192.5(w) x 63.3(h) mm
• Weight: 1.93kg (4.3lbs)
Test conditions:
Gain = 0dB, 0.775V(0dBu) with 300 Ohm load unless stated otherwise
SNR Balanced re 23V, SNR SE re. 11.5V

https://ifi-audio.com/products/pro-ican/



iFi Retro Stereo 50 (Stereo 50 $1600, LS3.5 speakers $810)

iFi Retro Stereo 50.jpg
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Starting with the Stereo 50, the iFi Retro is a completely new range that has one objective: to include everyone who loves music regardless of age, gender or technology. The Retro Stereo 50 is an all-in-one tube stereo system: from Bluetooth aptx (phone/pad) to High-res digital (computer) to vinyl (turntable). Everyone can bring their music and be able to connect to the Stereo 50 and produce music that simply astounds. There really is nothing like the Retro Stereo 50.

AMR and iFi are renowned for combining classic valve technology with state-of-the-art digital technology such as in the prestigious AMR DP-777 Digital Processor. The Stereo 50 is the latest from a long line of outstanding products. It features 4xEL84X and 2xECF82 tubes with a stunningly advanced ground-up circuit that has DNA from the best of classic amplifiers such as Telefunken, Marantz and Leak. Running primarily in Class A, its 25W+25W is and sounds astonishingly realistic. This all means a sonic performance that reflects the superb design and implementation.

Got headphones? The Stereo 50 with separate 3.5mm and 6.3mm inputs is just for you. Each headphone input has its own dedicated gain and sensitivity to perfectly match high-sensitivity In-Ear-Monitors and low-sensitivity Over-the-Ear headphones respectively. The 6.3mm output pumps out a “turbo-charged” 7,000mW. So even the most demanding of headphones such as the HiFi Man HE-6 has met its match.

iFi’s iPhono has already become a modern classic and the Stereo 50’s phono stage is set to emulate this feat. It has adjustable ultra-wide gain MM/MC from 38-62dB and its tone control system harks back to classic equalisation technology. With 6 different EQ curves (via the precision tone control), every stereophonic record is catered for. From the default RIAA through to EMI and Decca, as the legion of iPhono users can attest, once dialed-in, each and every record has “a kind of vinyl magic”.

The Stereo 50 “full system” including the Retro LS 3.5 is a match made in audio heaven. The LS3.5 is iFi’s 21st century take on the legendary BBC LS3/5a. To create the LS3.5 speaker, iFi scoured the globe for the very latest technologies and ideal materials. The result is a deep, wide and open sonic signature with spine-tingling tonality.



Specifications
• Wireless Input: Bluetooth (aptX)
• Digital Inputs: USB (DSD512/768kHz/2xDXD), Coaxial (192kHz), Optical (192kHz)
• Analogue Inputs: Line 1, Line 2 (3.5mm share with Line 2), Phono(MM/MC Low/MC High/Line 3)
• Outputs: Loudspeaker Output, Headphone Outputs 3,5mm (imp < 3Ω) & 6.2mm (imp < 6Ω)
• Power output (Music): > 25W(majority Class A)
• Total Harmonic Distortion(THD): < 0.2% (@ 2.83V/1W)
• Output bandwidth: 10Hz ~ 60kHz
• Frequency Response: 10Hz ~ 80kHz
• Signal-to-Noise Ratio : Amplifier >101dB (@ max output), Phono MM >90dB(A), Phono MC >80dB(A)
• DAC Dynamic Range: > 113dB(A)
• Tone Control: Bass(100Hz) +/-8dB, Treble(10KHz) +/-8dB
• Analogue Signal Processing (ASP): XBass, 3D Holographic
• Phono Gain: 38, 50, 62dB
• MM: 220pF//47k
• MC: 200pF//330R
• RIAA Accuracy: <0.5dB
• Tubes: 2 x ECF82; 4 x EL84X
• PCM: 768/705.6/384/352.8/192/176.4/96/88.2/48/44.1kHz
• DSD 512/256/128/64: 24.6/22.6/12.4/11.2/6.2/5.6/3.1/2.8MHz
• DXD: 768/705.6/384/352.8kHz
• Filters: Minimum Phase (PCM 192/176.4/96/88.2/48/44.1kHz), Bit Perfect (DXD/PCM 768/705.6/384/352.8), Analogue (DSD)
• Power Supply: AC 100V-240V
• Power consumption: 75W, ~0.1W (Standard mode)
• Dimensions (W x H x D): 300 x 153 x 226mm
• Weight: 5.8kg


https://ifi-audio.com/products/retro-stereo-50/
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 - Maverick Audio

Indlægaf kvik » 29. jan 2014, 11:05

Maverick Audio TubeMagic A1 Hybrid Integrated Amplifier ($200)

Maverick Audio TubeMagic A1.jpg
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Imagine if you could have a power amplifier, a tube headphone amplifier and a tube pre-amplifier all fit within the same small form factor case and built with high-quality “old school” components. Now you can have all of that. This is the Maverick Audio A1 Hybrid Amplifier, a multifunction amplifier that can go anywhere, in any setup and drive your analog listening devices (speakers, headphones) with power and quality.

Audio inputs:
• Analog audio input x 1 (Analog)
• Line-in audio input x 1 (Analog)
• Analog connector: RCA, 1000k ohms

Audio outputs:
• All RCA connectors are gold-plated
• Volume control is provided for all outputs
• Power outputs: 20 watts per channel (into 8 ohms), 40 watts per channel (into 4 ohms)
• Frequency Response: 20Hz – 25KHz
• Input Impedance: 100K ohms
• Analog RCA outputs signal-to-noise ratio: >90dB
• Tube pre-out outputs signal-to-noise ration: >90dB
• Total harmonic distortion: less than 0.1% (Tube pre-out outputs and analog outputs)
• Headphone maximum output power: 1000mW x 2 (32 ohms), 500mW x 2 (300 ohms), 300mW x 2 (600 ohms)

Headphone outputs:
• Standard 1/4″ jack
• Minimum headphone impedance: 16 ohms
• Maximum headphone impedance: 600 ohms
• Headphone output power: 300mW ~ 1000mW

Power:
• R-core Linear 110/220 manual switch

Physical:
• Dimensions: 10″W x 2.1″H x 6.5″D (260mm x 55mm x 167mm)
• Finish: brushed aluminum in black color


http://www.mav-audio.com/base/product/tube_magic_a1
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 - Icon Audio

Indlægaf kvik » 29. jan 2014, 11:19

Icon Audio MP 3 (£500)

Icon Audio MP 3.jpg
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Broadly similar to our HP8 our new (MP 3) is a mini hi fi amplifier using the same chassis.

The conventional way to provide a headphone output on an amplifier is to drop the power through a resistor. This has a big problem that it provides very high source impedance (rather like a weak battery) the effect of this is to give very “Low FI” results. Ideally headphones should be driven from small high quality amplifiers. Many headphone amplifiers use small “microchip” amps which although are a better solution still do not provide ideal matching to the wide range of headphones available. The MP3 has a special low power transformer winding to give precise headphone matching.

Our MP3 is in fact a small integrated hi fi amplifier. We use a custom wound multi-tap output transformer which provides perfect matching to virtually any headphone load. We start with a substantial mains transformer with matching power supply and two output transformers. The MP3 tops the scales at 6.5kg, giving you an idea of how much iron you get for your money!

Like our other models the MP3 has no printed circuit board and is all hard wired with top quality components. We use silver Teflon audio cable, gold plated terminals and the famous “ALPS” volume pot for sonic purity. The first stage gain uses the excellent Mullard designed ECC83. this wonderful valve has exceptional detail and fluidity. 2x5w (RMS) doesn’t sound much it can give surprisingly good results in an office or bedroom environment where high sound levels are not required. Indeed, used with high efficiency speakers (e.g. Lowther/Fostex etc) it will fill a room with full range sound.


Specifications and Features:
• Comprehensive manual supplied
• Full instructions for valve change included
• All hand wired point to point
• No printed circuit board to ‘colour’ sound
• Japanese Blue ALPS volume pot.
• Class A, all Triode driver circuit
• 2 x EL 84
• 2x ECC83 first stage valve
• 2x 5w RMS continuous per channel max
• Signal to noise level -90db
• Freq response better than 20hz-20kHz +0 –0.2db
• Total harmonic distortion typically less than 0.2% 1khz
• Suitable for 4 to 10 Ω loudspeakers
• Suitable for 4-60 Ω headphones
• Japanese steel EI transformers with low oxygen copper
• Slim profile design
• High quality 2W metal film, & wire-wound resistors
• Blue LED mains indicator
• Polypropylene audio capacitors
• Silver PTFE audio cable
• Custom hand wound output transformers
• Ceramic valve holders for minimum leakage
• Gold plated Input & speaker terminals
• One line input
• 350mv input sensitivity.
• 230/240volts 36 watts.
• C E, ROHS and WEEE compliant where applicable.

http://www.iconaudio.com/portfolio-item ... udio-mp-3/



Icon Audio HP8 MKII (£900)

Icon Audio HP8 MKII.jpg
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Headphone amplifier all triode..

The conventional way to provide a headphone output on an amplifier is to drop the power through a resistor. This has a big problem that it provides very high source impedance (rather like a weak battery) the effect of this is to give very “Low FI” results. Ideally headphones should be driven from small high quality amplifiers. Many headphone amplifiers use small “microchip” amps which although are a better solution still do not provide ideal matching to the wide range of headphones available.

Our HP8 MKII is in fact a miniaturised pure valve hi fi amplifier. We use a custom wound multi-tap output transformer which provides perfect matching to virtually any headphone load. We start with a substantial mains transformer with matching power supply and two output transformers. The HP8 MK II tops the scales at 7kg, giving you an idea of how much iron you get for your money!

Like our other models the HP8 MKII has no printed circuit board and is all hard wired with top quality components. We use silver Teflon audio cable, gold plated terminals and the famous “ALPS” volume pot for sonic purity. The first stage gain uses the excellent JJ 12AX7. This wonderful valve has exceptional detail and fluidity. Its smoothness complements the super 6SN7 (the best hi fi valve ever?). This combination will give you a simply stunning insight into inner detail of your favourite recordings whether Analogue or digital.


Specifications and Features:
• Comprehensive manual supplied
• Full instructions for valve change included
• All hand wired point to point
• No printed circuit board to ‘colour’ sound
• Japanese Blue ALPS volume pot.
• Class A, all Triode circuit
• Output impedance matching from 8 to 600Ω
• 2 x Shuguang 6SN7
• NOS, Treasure and Full Music types available
• 1x ECC83 first stage valve
• Signal to noise level -90db
• Freq response better than 20hz-20kHz +0 –0.2db
• Total harmonic distortion typically less than 0.2% 1khz
• Suitable for 4-8 ohm high efficiency loudspeakers
• Japanese steel EI transformers with low oxygen copper
• Slim profile design
• High quality 2W metal film, & wire-wound resistors
• Blue LED mains indicator
• Polypropylene audio capacitors
• Silver PTFE audio cable
• Custom hand wound output transformers
• Ceramic valve holders for minimum leakage
• Gold plated Input & speaker terminals
• One line input
• 350mv input sensitivity.
• 230/240volts 36 watts.
• C E, ROHS and WEEE compliant
• 11cm W, 35 cm D, 14.8 H, 6.5 kg (remember to allow space for connections)

http://www.iconaudio.com/portfolio-item ... -hp8-mkii/



Icon Audio Stereo 20 PP (£900)

Icon Audio Stereo 20 PP.jpg
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Integrated EL84 PP 15W..

In a rapidly changing world it is nice to have some traditional values. In 1955 The British company H. J. Leak designed the Stereo 20 using the new Mullard EL84, and ECC83 valves. It was an instant worldwide success for quality performance and value. These vintage amplifiers can now fetch over £1200.00! Our new Stereo 20pp is based on this design. Ideal for the smaller room, or loudspeakers that do not require a large amount of power. This amplifier has a very transparent quality, being particularly suited to acoustic and orchestral music, but used with appropriate speakers is capable of performance way beyond your expectations!


Specification & Features
• EL84 output valves
• ECC83/ECC82 double triodes valves
• Class A, all Triode front end
• Ultralinear output circuit
• Can be supplied in triode form upon request
• Hand wired point to point components
• 15 Watts per channel Ultralinear
• Suitable for 4 to 8ohm loudspeakers
• Freq response 20-20Khz
• Attractive valve cover included in the price
• Solen hi fi quality audio capacitors
• Silver PTFE audio cable
• Gold plated Input & speaker terminals
• 3 line Inputs for CD, Tuner, MP3 etc
• 250 mv sensitivity for full output
• 220/240volts, 100w
• 31W, 27D, 20H cm 10kg
• Comprehensive manual supplied

http://www.iconaudio.com/portfolio-item/stereo-20-pp/



Icon Audio Stereo 25 MK II (EL34 £1250, KT88 £1350)

Icon Audio Stereo 25 MK II.jpg
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Integrated Entry Level model 25 + 25W EL34 / 35 + 35W KT88..

Not everyone can aspire to one of our high end valve amplifiers. So Icon Audio makes amplifiers for all needs. Our new ST25 MKII retains all the important features of the ST40 MKII, yet is excellent valve for money. New features include the excellent 6SN7 and 6SL7 valves for improved sound, and a headphone socket with excellent performance. We know that many of our customers like to experiment with different valves, so the ST25 MK II is designed to use: 6L6, EL34, 6CA7, KT66, KT77, KT88, 6550. Our simplified bias circuit means that valve replacement of the same type requires no bias adjustment.


Specification & Features
(Typical conditions EL34 [email protected] 240v 50Hz. 8 Ω)
• 6L6/EL34/6CA7/KT66/KT88/6550 output valves
• 6SN7/6SL7 double triode driver valves
• Class A, all Triode front end
• Ultralinear output circuit
• Can be supplied in triode output by request 15+15w
• Hand wired point to point. No printed circuit board
• 30w RMS per channel Ultralinear
• 4 and 8ohm loudspeaker output
• Frequency response 20-20khz +0 – 0.5db
• THD typically less 0.2% 1kHz
• Hand wound transformers
• Attractive valve cover included in the price
• Hi Fi quality Solen capacitors
• Silver PTFE audio cable
• Gold plated Input & speaker sockets
• 3 line Inputs for CD, Tuner, Phono etc
• 250 mv input for full output
• 220/240volts, 100w (180w max)
• 34W, 34D, 21H (overall) 17kg
• CE, ROHS & WEEE compliant
• Comprehensive manual supplied

http://www.iconaudio.com/portfolio-item ... -25-mk-ii/
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 - Cayin Audio

Indlægaf kvik » 29. jan 2014, 11:21

Cayin Cayin HA-3 ($550)

Cayin Cayin HA-3.jpg
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The Cayin HA-3 is a DAC coupled to a hybrid headphone amplifier, asymmetrical tubes and MOSFETs in Class A. These tubes are associated with high quality components to deliver a great musicality. HA-3 is equipped with an XMOS asynchronous USB interface, a Burr-Brown PCM1792 converter, an Analog Devices 827JN opamp, and two 6N16B tubes. The amplifier can drive headphones 32-300 Ohm with ease.

Specifications
• Freqency Sesponse: 10Hz-100kHz (AUX input); 10Hz-35kHz (USB input)
• Power Output: [email protected]Ω; [email protected]Ω; [email protected]Ω
• Digital Input: USB Audio (USB 2.0, support upto 24bit/192kHz)
• THD: 0.01% (1kHz)
• S/N: 105dB (A-weighted)
• Input Impedance: 100kOhm (AUX Input)
• Input Sensitivity: 1.8V (AUX Input)
• Input Terminals: USB-B, RCA
• Headphone Output: 6.35mm x2
• Power Consumption: <35W
• Dimensions (WDH): 180x290x65mm
• Net Weight: 3kg
• Tubes: 6N16B x2

http://en.cayin.cn/products_info?itemid=90



Cayin HA-1A mkII ($1000)

Cayin HA-1A mkII.jpg
Cayin HA-1A mkII.jpg (92.24 KiB) Vist 12380 gange

Cayin has revamped the highly respected and renowned tube headphone amplifier HA-1A. The extraordinary part of this new amplifier is not only the facelifted wooden appearance, the EL84 based circuit design offers the most natural, realistic and powerful sound of its class and will definitely blow your mind when it sings. HA-1A MK2 will be one of the milestones of Cayin 22 years of expertise and devotion on tube amplification, by using the best possible material, upholding high standards of craftsmanship and dedicating to perfection, it shall reflect the kind of promises that Cayin has been strived for ever since.

FEATURES
• Serious upgrade to the Stereophile recommended HA-1A
• USA NOS Tung-Sol 12DT5 vacuum tube for recitification
• Enhanced S/N ratio and frequency response
• New designed upgraded output transformers
• Three points foundation support design
• Stylish and elegant piano paint finish red wood side benches
• Can also be used as a 14db gain vacuum tube pre amplifier
• 2 x 12AU7 for pre-amplifier stage
• EL84 x 2 vacuum tubes for power output stage
• Silver plated high purity copper internal signal wiring
• Special handmade low magnetic leakage toroidal power transformer
• Special handmade wide frequency response Ei audio transformers
• All point to point wiring (hand soldering)
• Detachable power cord system (IEC)


SPECIFICATIONS
• Tubes: 12AU7 x2, EL84EH x2, 12DT5 x1
• Dimensions (WDH): 126.5x304x215mm
• Net Weight: 9.5kg
• Power Consumption: 65W
• Input Terminial: CD, AUX
• Output Terminal: PRE-OUT

As Headphone Amplifier
• Output Impedance: 8-32Ω, 33-64Ω, 65-150Ω, 151-300Ω, 600Ω
• Power Rating: [email protected]Ω; [email protected]Ω; [email protected]Ω; [email protected]Ω; [email protected]Ω
• Input Sensitivity: 200mV-440mV
• Frequency Response: 20Hz-45kHz ±3dB
• THD: 1% (1KhZ)
• SNR: 100dB (A-weighted)

As Preamplifier
• Output Level: 2V (max 4V)
• Frequency Response: 10Hz-42kHz ±3dB
• Input Sensitvity: 420mV
• THD: 0.5%
• SNR: 100dB

http://en.cayin.cn/products_info?itemid=89

Note: Also sold as Cayin CS-1H



Cayin HA-300 ($4000)

Cayin HA-300.jpg
Cayin HA-300.jpg (855.26 KiB) Vist 9872 gange

The HA-300 adopts the Class A single-end amplification with a balanced output design. The output of the 300B power tube will feed to a pair of output transformers for single-end or balanced output. Being one of the biggest tube amplifier manufacturers in the world, Cayin designs and builds our transformers, making sure even the finest detail will be attended to. In the case of HA-300, the output transformer was specially winded to provide three set of impedance matched outputs at 8-64Ω, 65-250Ω, and 251-600Ω respectively, making it extremely versatile to match with a wide range of headphones in the market.

We also built an outboard power supply for HA-300. On top of the in-house design, custom-build toroidal power transformer, we developed a special circuit to supply steady power independently to different gain stages. The voltage amplifier circuit will adopt an independent regulator design, and we shall deploy 4 pieces of NOS RCA 22DE4 as rectifier tubes. This power supply design will deliver the cleanest power possible with minimal interference to the line signal amplification in the main Amplifier chassis.

On top of a 6.35mm singled-ended and 4-pin XLR balanced headphone output, the HA-300 has a set of speaker outputs so it can be used as a speaker amplifier delivering up to 8wpc Class A output


Features
• Best possible integration of balanced and singled-end signal processing: Input Transformer(for Bal input)-> Push-pull Single-end Amplification-> Output Transformer (for Bal output)
• Two-boxes design with multi-stage tube regulated power supply
• Carefully selected premium tubes
Power Amplification: Full Music gold pins ceramic base 300B x2
Voltage Amplification: Shuguang WE6SN7 replica of Western Electric x2
Tube Rectification: NOS RCA 22DE4 rectifier tubes x4
• In-house design and custom-build power, input and output transformers
• Provide choice of headphone outputs for high, middle and low impedance; make sure all headphones will perform satisfactory.
• Point-to-point Wielding to ensure shortest signal path and enhance the transparency and refinement of audio performance
• High quality shield silver-plated internal cable to minimize interference during transmission
• High-Precision 24 steps potentiometer to provide low noise, high-precision volume control
• US Aviation standard sockets and connectors for outboard power supply connection.
• Beautifully designed and crafted VU meters to monitor the signal level
• LIghtweight aluminium alloy panels, hand-painted finishing for uniform and long lasting high-gloss surface

HA-300_specification.jpg
HA-300_specification.jpg (169.83 KiB) Vist 9872 gange

http://en.cayin.cn/products_info?itemid=112
https://www.head-fi.org/threads/cayin-u ... 18.872093/
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Re: Rør, hvis du tør - Xindak

Indlægaf kvik » 29. jan 2014, 11:23

Xindak MT-2 Headphone Amplifer / USB DAC (€490)

Xindak MT-2.jpg
Xindak MT-2.jpg (104.13 KiB) Vist 12380 gange

MT-2 is an integrated amplifier adopts tube amplifying and also can use as headphone amplifier. The units appearance is very exquisite and small, which width is only 26cm. The circuit adopts 6P1 vacuum tube as its amplifying tube which form pre-amplifying and drive with 6J1 tube. Adopts Xindak E type special made broadband output transformer, about power supply, it’s adopts 85w high reliability E type power transformer. Besides providing 6.35mm headphone output Jack,it also have USB interface build-in. Trough USB connect cable connect to computer which installed windows system , the device can use as external USB audio DAC. Its voice is clear and transparent, exquisite, mellow, warm and melting. This product have two different version, the one MT-2(II) equipped with the aluminum alloy brushing panel.

• Rated Output Power: 1.5W/4Ω
• Input Sensitivity: 400mV for maximum rated output power
• Frequency Response: 10Hz-20kHz
• Input: RCA*1, USB *1
• S/N Ratio: >83dB
• THD: 1% (1kHz/1V)
• Number of Channels: 2
• Power Consumption: 56W
• Tubes: 6P1*2, 6J1*2
• Net Weight: 5.5Kg
• Dimensions (W*H*D): 260mm*150mm*186mm

http://www.xindak.com/en-us/product_det ... ductID=465


OBS! Also sold as Audreal MT-2 II (€590)
http://www.audreal.de/roehren-serie/27- ... erker.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 - Audio Space

Indlægaf kvik » 29. jan 2014, 11:36

Audio Space Mini-2 SE (AUD2200)

Audio Space Mini-2 SE.jpg
Audio Space Mini-2 SE.jpg (102.73 KiB) Vist 12380 gange

No, the Audio space Mini-2SE is not a single-ended amplifier, Audio Space does make single-ended amplifiers and better push-pull amplifiers but of course they also cost considerably more money. First, let’s see what you get. Opening the box you get a nicely chrome finished chassis amplifier with point to point internal wiring. Excellent build construction and a nice set of switches and knobs that feel solid. No cheap plastic buttons that adorn almost everything in this price range that make you wonder if you should have just shopped for your hi-fi at Walmart instead. The amplifier offers three switches for maximum and minimum feedback, triode and ultralinear mode, and a direct source switch to allow the integrated to be operated as a power amp. There are three line inputs, no phono stage, and a very good headphone output. There is no remote control. The amplifier certainly provides a high pride of ownership factor in terms of looks and build for this money.

The Mini-2SE is quite a neutral amplifier – solid bass and extended treble. The sound is never thick, or overly veiled or mellifluous. I tried all the various options running the amplifier in ultralinear and triode mode as well as max and minimum feedback. I ultimately found that the amplifier sounded best in triode mode with minimum feedback. For tough-to-drive loudspeakers with rock at higher levels, it is nice to have the ultralinear mode and max feedback mode which effectively doubles the amp’s power. This is a nice option for parties when critical listening isn’t required.

Few amplifiers bother with a headphone amp section and when they do it seems to be a cheap op-amp add on just to advertise that it has one. The Audio Space is a serious tube amp. I own a dedicated Antique Sound Lab MG Head DT as well as a Total Bithead headphone amp and the Audio Space mini-2SE is a significant upgrade to both units. With my HD 600, the Audio Space generated significantly better bass response in terms of depth and drive, and sounded more open and spacious than my other headphone amplifiers. The amplifier was free of noise in either stereo or headphone mode. The amplifier has a hint of softness around the leading edges of notes, which I found preferable to the ultralinear mode where it may perhaps be viewed by some as superior or more accurate but comes across as a little more “glassy.” What is nice about the switches is that they give you the ability to make the subtle adjustments to your preferences and perhaps to tailor the sound to your chosen headphones.


Outstanding Features:
• Rugged stainless steel chassis
• High quality EI transformers and components
• Switching between ultra-linear and triode
• Switching between high and low negative feedback
• Switching between direct and line input
• Headphone jack
• Innovative tube circuitry with choke coil
• Point to point soldering

Specifications
• Input: Single-ended RCA x 3
• Output Impedance: 4, 8 ohm
• Output Power:
24W x 2(Ultralinear - Class AB Push-Pull),
12W x 2 (Triode - Class AB Push-Pull)
• Frequency Response: 15Hz-30KHz +/-1dB
• T.H.D.: < 1%
• Input Sensitivity: 230mV - 300mV
• S/N Ratio: > 87dB
• Channel Balance: < 1dB
• Vacuum Tubes:
1x 6N9P (6SL7 or ECC35)
2x 6N8P (&SN7 or ECC32)
4x EL34 (6CA7)
• Dimension (DxWxH): 345 x 240 x 175 mm
• Weight: 13.2 kg ( N.W.) / 16.5 kg (G.W.)

http://audiospace.com.au/p14/Mini-2SE/p ... 0538c25c55
http://dagogo.com/audio-space-mini-2se- ... ier-review


Other Audio Space tube integrated amplifiers with headphone-out:
AS-2i (AUD1680)
AS-2.8i (AUD1775)
AS 3i (AUD2190)
AS-3.8I (KT88) (AUD2700)
AS 6i (300B) (AUD4780)
AS-6i Pro (AUD3235)
Galaxy 34 (AUD2700)

http://audiospace.com.au/Integrated-Amp ... index.html
http://www.audio-space.com/product-cate ... amplifier/
http://www.charismaaudio.com/?page_id=1015
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 - Kypo Electronic

Indlægaf kvik » 29. jan 2014, 14:03

Kypo THA 2000 (apprx €150)

Kypo THA 2000.jpg
Kypo THA 2000.jpg (133.85 KiB) Vist 12380 gange

Freqency response: 10Hz - 24 kHz (-1dB)
S/N ratio: more than -90dB
Input impedance: 47kOhm
Possible headphone impedance: 32 - 600 Ohm
Output internal impedance: aprox 12 Ohm
Damping factor: 8 (for 100 Ohm headphones)
Gain: 20dB

Output power / THD:
Rz=32 Ohm: 10mW / <0,5%, 75mW / <4%
Rz=100 Ohm: 10mW / <0,05%, 200mW / <2%
Rz=600 Ohm: 10mW / < 0,2%, 400mW / < 1%

Tubes:
Preamp: 2x 6J1P-EV (6J2P-EV)
Poweramp: 4x 6J11P-E (6J43P, 6J23P)

I/O:
Line In: 2x Cinch RCA 47 kOhm
Bypass Out: 2x Cinch RCA
Line Out: 2x Cinch RCA Ri 50 Ohm
Headphones Out: Jack Stereo 6,3mm 1/4 inch Ri 12 Ohm
Mains Power: IEC C14 230V/30VA 50-60Hz

http://www.kypo.eu/eng/product2.htm


OBS! Also sold as La Source HA 1 (€390)
http://thetubeclinic.unblog.fr/electron ... -a-p-ha-1/
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 - Canor Audio

Indlægaf kvik » 29. jan 2014, 14:06

Canor TP10 (€800)

Canor TP10.jpg
Canor TP10.jpg (458.22 KiB) Vist 12380 gange

The CANOR TP10 is a headphone tube amplifier of hybrid structure, and it is a direct successor to the highly popular and successful SH-1 model. The new model has a completely redesigned and improved power supply. The amplifier uses superior operational amplifiers (Burr-Brown), and top-echelon polypropylene capacitors. Unlike SH-1, the 12AX7 tube is replaced by 12AT7 input tube. ALPS potentiometer is connected to the axis via flexible coupling and a bearing, in order to provide a fine, smooth motion of the knob. The front panel is made of 10 mm thick aluminium. Input connectors are gold-plated RCA phono plugs. By-pass output is equipped with same connectors. The tube amplifier is powered from an external adaptor. External adaptor significantly increases signal-to-noise ratio which we consider together with musical expression of the amplifier as one of the most important qualities of the amplifier. The TP10 can drive dynamic headphones from 30 ohms to 300ohms. All tubes are being burned-in and measured on our specially developed BT-2 and TTM-2 measuring devices.

• Output power: 400mW/30 Ohms, 70mW/300 Ohms
• Gain: 10.5 dB
• Input impedance: 47 kOhm
• Harmonic distortion: < 0,03 % (1 kHz)
• Frequency range: 30Hz – 20kHz/-0,05dB
• Signal to noise: >97dBV
• Headphone jack: 3-pole 6.3 mm
• Power supply: 16 V / 1000 mA AC
• Dimensions (w x h x d): 210 x 88 x 295 mm
• Weight: 3 kg without power supply

http://www.canor-audio.com/?page_id=77
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 - World Designs

Indlægaf kvik » 30. jan 2014, 23:13

World Designs HD3S (Kit Standard/XL £500/575, Built +£160)

World Designs HD3S.jpg
World Designs HD3S.jpg (129.35 KiB) Vist 12380 gange

A beautifully simple, yet sophisticated, stereo headphone amplifier design using ECL83 valves. The unit works directly from any source and includes headphone impedance matching for optimum results from your favourite headphones. With the current interest in high quality headphones driven by the portable audio revolution, this is the right product to get the best from them. Until you try a good quality headphone amplifier in place of the headphone sockets on most portables and amplifiers (where they are, in most cases, an afterthought to increase the feature count) you do not realise what you are missing.

The circuit utilises twin high specification E/I transformers output that will drive any headphone load from 16 ohms to over 300 ohms depending on how the secondaries are configured, switched by DIP switches for easy re-configuration.. The HD3S is a single-ended design, with the power pentode wired up in triode configuration for that added purity, and is as quiet as a mouse.

External dimensions: W220 x D314 x H82mm. Weight 3.6kg


http://www.world-designs.co.uk/headphone%20amps.htm
http://www.world-designs.co.uk/index_ht ... _Sep14.pdf
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 - ALLNIC Audio

Indlægaf kvik » 30. jan 2014, 23:54

ALLNIC HPA-3000 GT ($4900)

ALLNIC HPA-3000 GT.png
ALLNIC HPA-3000 GT.png (578.07 KiB) Vist 12378 gange

The HPA-3000 GT is Allnic Audio’s stereo headphone amplifier, with an output transformer coupled. The HPA-3000 GT has a voltage gain of +28dB, and a maximum output of 3 watts. It works best with headphones having an impedance of from 30 to 600 ohms.

Features:
• High-quality, NOS tubes
• Pure Class A operation
• As are all Allnic Audio products, the HPA-3000 GT is fully RoHS (EU Reduction of Hazardous Substances regulation) compliant in construction and materials
• Headphone output: The HPA-3000 GT is equipped with two(2) headphone outputs ‘jack’ and two(2) XLR for(4) pin outputs. Each for low and high impedance
• Pre output: The HPA-3000 GT is equipped with one(1) pair of RCA pre outputs, whose impedance is around 10 ohms, this extremely low value means very powerful driving capability to next amplifier with the widest frequency ranges
• Volume control: The HPA-3000 GT’s volume control is the large knob in the center of front panel. It rotates clockwise (gain increased) and counterclockwise (gain reduced)

Specifications:
• Inputs: One (1) pair unbalanced (RCA), One (1) pair balanced (XLR)
• Headphone Output: Two (2) one-quarter inch (1/4”), Two (2) XLR
• Pre-out: Available
• Frequency Response: 20Hz ~ 20KHz (±0.3db)
• Voltage Gain: +28dB
• Optimum Headphone Impedance: Low under 50 ohms, High under 600 ohms
• Output Wattage: Three (3) watts
• Maximum Input Voltage: Ten (10) volts RMS
• THD(Total Harmonic Distortion): Less than 0.03% (1KHz, Out put 1V)
• S/ N Ratio: -63db (CCIR, 1KHz)
• Power Consumption: 48 Watts
• Tubes: 6EM7 X 2
• Fuse: AC 2A, 250V
• Dimensions: 240mm x 330mm x 175mm (W x D x H)
• Weight: Unpacked: 10 kg

http://allnicaudiocom.cafe24.com/?page_id=928
http://audiomentors.co.kr/shop/hpa-3000-gt/



ALLNIC HPA-5000 XL ($7500)

ALLNIC HPA-5000 XL.png
ALLNIC HPA-5000 XL.png (630.1 KiB) Vist 12378 gange

The HPA-5000 is Allnic Audio’s stereo Headphone Amplifier. The HPA-5000 is an Output Transformer-less (OTL) and Output Capacitor-less (OTC) amplifier design, utilizing a true balanced Positive-Negative cancellation circuit. The HPA-5000 has a voltage gain of +28dB, and a maximum output of 5 watts. It works best with headphones having an impedance of from 30 to 50 ohms.

A design made for the true headphone audiophile, a tubed output transformer-less, output capicitator-less design from the genius of KS Park. Kang Su has a passion for excellent headphone designs, he once heard a similar design in Japan at an audio show. He thought it showed good promise but felt the tubes and circuit employed could be designed from the ground up to make for a more beautiful sound. After many years of study and a special purchase of Mullard E180CC vintage tubes, the dream was realised. This product is so special, it was categorized under the 5000 series.

What you need to know about ALLNIC AUDIO: ALLNIC is short for “All Nickel” which comes from the fact that all our output transformers are made with 78 percent nickel core perm alloy. This not only makes ALLNIC a one of a kind, listeners hear more of the lows and highs with the greatest dynamic range available. With ALLNIC you can expect greater life expectancy from vacuum tubes as we use only New Old Stock Vacuum Tubes. Since they last longer you save money. We also employ our patented gel cap dampening tube sockets which isolate micro phonics eliminating unwanted external vibrations giving listeners the purest sound possible. The ALLNIC built 41 silver stepped motorized remote controlled volume attenuator provides precise volume tracking and ease of operation making it convenient and allowing more listening time. The convenience of being able to match any power tubes with our manual power tube bias feature will save a lot of money and time in the long run. Easy access to our surface mounted fuses for each power tube save you time, money and frustration. You can be confident in our performance with ALLNIC’s two year transferable warranty on electronics and one year transferrable warranty on tubes. Our warranty protects your investment at the same time increasing the resale value


Features:
• High-quality, NOS tubes
• True OTL/OCL design
• Pure Class A operation
• New vacuum tube damping technology – Allnic Audio’s patented "Absorb GEL tube damper" technology prevents harmful vibrations from reaching the driver tubes and, therefore, prevents micro-phonic noise propagation in the tubes. The Allnic Audio Absorb Gel damper technology effectively solves a problem that plagues most tube amplification systems. Provided other tube components do not introduce micro-phonic noise into your system, with the Absorb Gel damping system, you will enjoy a degree of transparent sound that will surprise and please you.
• As are all Allnic Audio products, the HPA-5000 is fully RoHS (EU Reduction of Hazardous Substances regulation) compliant in construction and materials

Specifications:
• Power Consumption: Tubes:
• Inputs: Two (2) pairs unbalanced (RCA)
• Headphone Output: One (1) one-quarter inch (1/4”)
• Frequency Response: 20Hz ~ 20KHz (±0.3db)
• Voltage Gain: +28dB
• Optimum Headphone Impedance: Thirty (30) to fifty (50) ohms
• Output Voltage: Five (5) watts
• Maximum Input Voltage: Five (5) volts RMS
• THD (Total Harmonic Distortion): Less than 0.03% (1KHz, Output 1V)
• S/N Ratio: -68db (CCIR, 1KHz)
• Power Consumptioin: 70 Watts
• Tubes:
6AN8 – New Old Stock – first gain stage – no equivalents
E180CC - New Old Stock - second gain stage - approximately electrically (not sonically) equivalent: CV8431, 7062, 5965, 12AV7, 6414, 6829
7233 – New Old Stock – no equivalents
• Fuse: AC 2A, 250V
• Dimensions: 230mm (~9.1 inches) x 380mm (~12.3 inches) x 165mm (~6.5 inches) (W x D x H)
• Weight: Unpacked: 9 Kg (~19.9 lbs), Packaged: 11 Kg (~24.26 lbs)

http://allnicaudiocom.cafe24.com/?page_id=1088
http://hammertoneaudio.com/product/hpa5000xl
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 - Vacuum Tube Audio

Indlægaf kvik » 1. feb 2014, 13:44

Vacuum Tube Audio HA12 ($900)

Vacuum Tube Audio HA12.jpg
Vacuum Tube Audio HA12.jpg (73.7 KiB) Vist 4581 gange

The new HA12 headphone amplifier is the result of a custom headphone amp built for a customer, and this version is now offered for anyone interested. This circuit design has several refinements for hi-end performance. This includes include a tube rectified and choke filtered high voltage power supply, with regulation for the signal amplifier. The filament supply has 18800 uF of capacitance for very low noise and ripple. The amp uses two EL84 output tubes, one 12AX7 preamp tube, and one 6CA4 rectifier tube. The output signal is transformer coupled to a pair of low-Z (32-100 ohm) and hi-Z (200-600 ohm) headphone outputs. There are two inputs, and dual mono gain/balance attenuators, followed by your choice of an ALPs RK27 volume control or a 24 step precision volume attenuator. The high voltage to the 12AX7 signal amplifier is regulated for very low noise and separation from the power amp output. The signal thru the EL84 output tube goes thru a high quality polypropylene film capacitor to the impedance matching output transformer. Frequency response is measured to be flat from 10Hz to 40KHz. Output power is meaured to be 500mw into 32 ohms and 60mw into 300 ohms, equivilent to a 2 watt amplifier into 8 ohms. Purchase options: Basic PCB board kit with parts (no chassis, no tubes, no transformers) is $199; Complete kit of all parts to build is $699; Assembled, tested, ready to use HA12 headphone amp is $899.

http://tubes4hifi.com/HA12.htm



Vacuum Tube Audio HA-14 ($1000)

Vacuum Tube Audio HA14.jpg
Vacuum Tube Audio HA14.jpg (95.7 KiB) Vist 4581 gange

This HA14 headphone amplifier was a custom design and build for a customer. Based on the schematic of an existing $800 product, we decided to do several upgrades to the basic design of the original for better sound and higher power output, using octal tubes rather than common noval tubes. These upgrades include choke filtered high voltage power supplies, with regulation for the signal amplifier. The result is more similar to products in the $1500-2000 range, with a completely dual mono design, using a pair of dual primary transformers as the only common element. Each channel has a 6X5GT tube rectifier with a CLC filter using a choke. There are two inputs, and dual mono gain/balance attenuators, followed by a very high quality TKD volume control. The high voltage to the 6SL7 signal amplifier is regulated for very low noise. The signal thru the 6L6GC output tube goes thru a high quality SoniCap to the impedance matching output transformer, with outputs for low-Z (32-100 ohm) and hi-Z (200-600 ohm) headphone outputs. Frequency response is measured to be flat from 10Hz to 40KHz. Output power is meaured to be 1000mw into 100 ohms, about 6 times as much as the original base design. Price is $999 with tubes & assembled, $799 kit with tubes.

http://www.tubes4hifi.com/HA14.htm

The same circuit design but using more common and less expensive 9 pin tubes (12AX7, EL84, 6CA4) is our new HA12 headphone amp. All on one compact circuit board (7.2' x 5.4") and using a single power transformer. Available as basic kit, complete kit, or plug-in ready amp.



Custom Amps built to your specs!! Email for more info and a quote . . .
Another VTA custom headphone amp (HA-9)
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Re: Rør, hvis du tør - Laconic Lab

Indlægaf kvik » 1. feb 2014, 16:23

Laconic Lunch Box Pro ($150)

Laconic Lunch Box Pro.jpg
Laconic Lunch Box Pro.jpg (297.41 KiB) Vist 11896 gange

Laconic Lunch Box Pro HA-06 is designed for high quality amplification of the audio signal and pairing the line out signal source with headphones. The amplifier has an extended dynamic range compared to the base model HA-06T. Increased power output, increased supply capacity of the power supply. Improved components (capacitors). The design uses matched tubes. As the source, you can use sound cards for computers, CD/DVD players, and other devices with standard linear output.

Specifications:
• Frequency range: 10-100000 Hz
• S/N Ratio: -80 DB
• Gain: 16 DB
• Dynamic range: 100 dB (250 Ohm load)
• THD: < 0.15%
• Input voltage: 0.25-2.0 V
• Input impedance :10 kΩ (20 kΩ)
• Output impedance: 30 Ohm
• Headphone impedance: Low 32-150 Ohm, Hi 150-600 Ohm
• Output connector: Jack 6.3 mm (x1)
• Input connectors: RCA
• Power supply: Built-in
• Output voltage: 2-5 V
• Power consumption: 20 W
• Tubes: 6N3P, 2x 6N24P
• Dimensions: 160 x 65 x 130 mm
• Weight: 1300 g

http://laconiclab.ru/lunch_box_pro.html



Laconic Azur H2 ($245)

Laconic Azur H2.jpg
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Laconic AZUR H2 amplifier designed for high gain tone and pairing linear output signal source with headphones have a resistance of 32 to 600 ohms. Laconic AZUR H2 has an expanded dynamic range while working load of 60-600 ohms. In the absence of the plug into the headphone amplifier performs the function of pre-amp (socket OUT). As the source is allowed to use the computer sound card, CD / DVD players and other devices that have a standard line output.

• Operating frequency range: 10-100000 (+ - 1dB)
• Gain: 15 dB
• The noise / background: < -85 dB
• Dynamic range (at load 250 Ohms): > 95 dB
• THD: < 0.5%
• Nom. input voltage: 0.25-2.0 V
• Load resistance: 32 - 600 Ohm
• Tubes: 1x 6N1P, 2x 6N6P
• Material: Steel
• Color: Black
• Dimensions: 170 x 100 x 130 mm
• Weight: 2 kg (without packaging)

http://laconiclab.ru/azur_h2.html



Laconic Night Blues Mini ($335)

Laconic Night Blues Mini.jpg
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2012 model year. Tube amplifier , developed based on the legendary Night Blues NB-3A V2. Reduction in size and weight copy " older brother " Night Blues NB-3A V2. Night Blues Mini is designed to work with any low-impedance load , which is the most difficult for tube amplifiers . The novelty lamps are used , originally developed for audio applications - this is the input and the output light 6ZH1P 6N24P . The amplifier used for headphones specially designed low-noise power supply circuit . Night Blues Mini features high output power and can also work well with high- headphones. For this there are two ways , for low resistance and high impedance headphones.

• Outputs: 2x 6.3 mm
• Frequency range:10 - 30000 Hz
• Inputs: 1x RCA
• Distortion: 1%
• Dimensions: 190x170x100 mm
• Weight: 2 kg

http://laconiclab.ru/laconic_night_blues_mini.html



Laconic ZD Mini ($350)

Laconic ZD Mini.jpg
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The amplifier is for high-quality audio signal amplification and coupling line-out signal source with headphones with resistance from 32 up to 600 ohms. The amplifier has an extended dynamic range when working with load 32-600 ohms. As the source, you can use sound cards for computers, CD/DVD players, as well as devices with standard linear output.Diagram courtesy of Edde Curent and used with their consent.

Specifications
• Driver tube: 6N9S (equivalent to 6SL7 , 6Sl7G, 6SL7GT, 1579)
• Power tube: 6N13S (equivalent to 6N5S, 6AS7, 6080.7802)
• Frequency range: 10Hz-100kHz 1dB (headphone 150-600 ohm)
• Gain: 18 dB (8 times)
• SNR: -95dB
• Headphone impedance: 32-600 Ohm
• Dynamic range: > 80dB (250 Ohm load)
• THD: < 0.5%
• Nominal input voltage 0.25-0.2 V
• Dimensions in mm (WxHxD) 125 x 180 x 290 (320 with volume controls and RCA connectors

http://laconiclab.ru/laconic-zd-mini.html



Laconic Night Blues NB-3A ($455)

Laconic Night Blues NB-3A.jpg
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2012 model year. Universal tube amplifier designed for low impedance and high-resistance load. Has a transformer output , which makes it possible to get the highest quality sound. The novelty lamps are used , originally developed for audio applications - this is the input and the output light 6N8S 6P6S . The amplifier used for headphones specially designed low-noise power supply circuit . NB-3A features high output power and can be operated with high- headphones. For this there are two ways , for low resistance and high impedance headphones. Night Blues, not being a hybrid, combining the advantages of the transistor and tube amp , being all-tube , nevertheless amplifier can work effectively with low-impedance load.

• Frequency range: 12-35000 ( + - 1 dB)
• Noise/background: < 87 dB
• Gain: 12 dB
• Dynamic range (with a load of 24-600 Ohm): > 95 dB
• THD: < 0.5%
• Input voltage: 0.3-3,0 V
• Load resistance 24-600 Ohm
• Outputs: 2x headphone jack 6.3mm
• Inputs: 1x line-in RCA
• Tubes: 2x 6N8S, 2x 6P6S
• Material: Steel
• Color: Black
• Size WHD: 195x135x250 mm
• Product/Shipping weight: 4.8/6.0 kg
• Warranty: 1 year

http://laconiclab.ru/laconic_night_blues.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 - ZMF

Indlægaf kvik » 2. feb 2014, 22:23

ZMF Pendant ($2000)

ZMF Pendant.jpg
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Pendant: An artistic and musical component intended to match and complement all things ZMF and beyond.

In 2016 we introduced our line of high impedance 300 ohm dynamic headphones.  Now, with the Atticus, Auteur and Eikon fulfilling our dynamic line-up, owners have found the importance of having the right amp paramount to getting the best, and most appropriate subjective sound from their ZMF's.  With the Pendant, we have collaborated with Ampsandsound, a manufacturer of high end boutique headphone and speaker amps, to create the perfect tube amp to drive ZMF dynamic, planar, or any other headphone in your collection.

Featuring a dead quiet, completely silent background, you'll never have to worry about where you end up on the volume dial of Pendant. Utilizing the 12AU/T/X7 tubes, the Pendant outputs 30, 70, or 100 percent (respectively) of its gain based on the tube used for the optimal output for any headphone, along with the ability to use the entire volume knob range if desired. ZMF Pendant, the only tube amp you’d ever need for full sized dynamic and planar headphones, as well as portables and even IEM’s! Yes - it’s THAT quiet!

At ZMF we've always valued the holographic, sweet and nuanced sound of a great tube amp.  There is simply nothing like taking in our favorite tracks with a perfectly constructed audio set-up, and doing so with the glow and sound of the ZMF Pendant is an experience like no other.



• Single Ended Ultra Linear tube amp
• EL84 drivers, 12AU/T/X7 input, 6CA4 rectifier tubes
• Transformer based design
• 8 ohm (low-z) and 300 ohm (high-z) outputs
• 3 Watts @ 8 ohms & 2.5 Watts @ 300 ohm
• Custom choke for dead quiet sound reproduction
• ALPS volume pot
• Dual RCA inputs
• Pre-amp outs via RCA
• Matte Black or custom wood chassis (base)

Optional vintage tube set: EL84, 6CA4, 12AU7/T/X7. NOTE: Vintage ubes may include a variety of tubes that are picked by us to get the best sound possible from your Pendant.


http://www.zmfheadphones.com/ampsanddacs/zmf-pendant
https://www.superbestaudiofriends.org/i ... rder.6607/
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Re: Rør, hvis du tør - Monoprice

Indlægaf kvik » 2. feb 2014, 22:27

Monolith Tube Headphone Amplifier ($400)

Monolith Tube HPA.jpg
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The Monolith™ Tube Headphone amplifier brings out the best in your headphones with the rich, warm sound of vacuum tube power. Featuring a powerful 6N5P tube and dual 6N3 tubes, the Monolith Tube Headphone Amplifier will effortlessly drive the most demanding headphones. Upgrade the sound from your computer with the internal 32-bit 384kHz ESS Sabre® DAC. Connect your PC or other digital playback device and bring your listening experience to a new level with the ESS Sabre DAC combined with the warm analog sound of vacuum tubes.

Tube Sound.. The Monolith™ Headphone Tube Amplifier utilizes a powerful 6N5P dual triode tube coupled with an output transformer for the output stage. Many competing designs only utilize a large electrolytic capacitor on the output, which degrades sound quality. Dual 6N3 tubes are utilized for the input stage and can cross over to US equivalents 2C51 or 396a. The 6N5P crosses over to a US6080 or 6AS7.

ESS Technology,, The ESS ES9018 Sabre® chip uses the patented 32-bit HyperStream™ DAC architecture and Time Domain Jitter Eliminator to bring out the best in your digital recordings. The USB receiver is the Savitech SA9227. It supports all sample rates up to 384kHz/32-bit and is clocked by two onboard oscillators.

Impedance Selector.. Optimize performance for your headphones! The impedance selector allows you to perfectly match the amplifier to the headphone impedance, ensuring that the ideal power is being utilized for any pair of headphones. The impedance can be set to one of five impedance groups, from 16 to 600 ohms.


Specifications
• Input Stage Tube Type: 2x 6N3 (crossing over to US equivalents 2C51 or 396a)
• Output Stage Tube Type: 6N5P (crossing over to US equivalents US6080 or 6AS7)
• Output Power (RMS): [email protected] / [email protected] / [email protected] / [email protected] / [email protected] (W/channel @ ohms)
• Inputs: Line-In 3.5mm (front), Line-In RCA (back), USB Type-B (back)
• Outputs: Headphone 6.35mm (front), Pre-Out RCA (back)
• Headphone Impedances: Selectable 16-32 / 33-64 / 65-150 /151-300 / 600 ohms
• DAC Chipset: ESS Sabre® ES9018S [email protected] and [email protected]
• USB Receiver Chipset: Savitech SA9227
• Direct Stream Digital™: DSD64, DSD128, and DSD256
• Frequency Response: 20Hz ~ 20kHz (-1dB)
• Signal-to-Noise Ratio: ≤ 98dB (A weighted)
• Total Harmonic Distortion; < 1% @64 ohms
• Dimensions; 5.9” x 9.4" x 12.8" (150 x 240 x 325 mm)
• Weight: 20.5 lbs. (9.3 kg)

https://www.monoprice.com/product?c_id= ... 1&format=2



Monolith Liquid Platinum ($ 770)

Monolith Liquid Platinum.jpg
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Monolith Liquid Platinum Headphone Amplifier by Alex Cavalli

The Cavalli/Monolith Liquid Platinum is a balanced version of the very highly regarded Cavalli Audio Liquid Crimson amplifier. The Platinum is fully balanced/differential amplification with 3.6W ( per channel balanced) into 50R. As an embedded tube hybrid (pioneered by Cavalli) the Platinum gives you the beautiful sound of tubes together with the grunt of solid state to drive the headphones. With multiple inputs and outputs for balanced and single ended operation, switchable gain, and easy front panel input selection, the Liquid Platinum will bring your music listening to new heights.


Specifications
• Frequency Response: 10Hz-50kHz ±0.05dB
• Included Tubes: 2x Electro Harmonix 6922
• Output Power (BAL/SE): 6.62/[email protected]Ω; 4.21/[email protected]Ω; 1.74/[email protected]Ω; 0.91/[email protected]Ω
• THD+N @1kHz w/47R Load Balanced Input: 1 Vrms: 0.0020% THD+N @ 1kHz; 5 Vrms: 0.0020% THD+N @ 1kHz
• IMD CCIF w/47R Load Balanced Input: 1 Vrms: 0.0006%; 5 Vrms: 0.0015%
• IMD SMPTE w/47R Load Balanced Input: 1 Vrms: 0.0006%
• Gain: 14dB (5x)
• Noise: -98dB (Balanced); -89dB (Single Ended)
• Crosstalk w/47R Load Balanced Input: -88dB
• Channel Balance: 0.3dB
• Output Impedance: < 0.14 Ohms Balanced; < 0.07 Ohms Unbalanced
• Headphone Outputs: 4 Pin XLR (Balanced), 1/4" TRS (Single Ended)
• Audio Output: Unbalanced RCA
• Audio Inputs: 3 Pin XLR Balanced, Unbalanced RCA Single Ended (converted to balanced internally)
• Dimensions: 8.8" x 8.5" x 2.0" (222 x 216 x 51 mm)
• Weight: 3.2 lbs. (1.5 kg)

https://www.monoprice.com/product?c_id= ... k2-2917105
https://www.head-fi.org/threads/monopri ... li.876406/
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

Indlægaf Ole » 3. feb 2014, 21:17

Super arbejde, der er rigtig mange flotte forstærkere - men nogle af dem ved de også godt hvad de vil have for. Men man bliver jo næsten fristet :-)
Ω Stax SR-L700MKI
Ω Stax SR-003MKII | Etymotic ER-4S | Ikko OH10 | Sennheiser Momentum TW
Ω Stax SRM-323S | Heed Obelisk DA | Stello U3 | AQ DragonFly Cobalt
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Re: Rør, hvis du tør - TPaudio

Indlægaf kvik » 5. feb 2014, 20:51

TPaudio CF-OTL (€250)

TPaudio CF-OTL.jpg
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TPaudio CF-TOR.jpg
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For headphones between 30 and 600 ohm. Usable alone, or inserted between CD-player and amplifier, or beween pre-amp and power amplifier. Does not negatively influence the signal path. Gold plated RCA input and output connectors. 6.3 mm headphone jack. Cabinet in brushed stainless steel, side panels in solid cherry .

• High Level Inputs: CD
• Sensitivity input: 250 mV
• Input impedance: 100 Kohm
• Output impedance: For 30 to 600 ohm headphones
• Output power of 0.7 watts per channel
• Frequency Response: 35Hz - 50,000 Hz + - 1.5 dB
• S/N Ratio: 90dB
• Operation: Class A + SRPP
• Standard valves: 1x ECC82/12AU7, 2x ECC88 (replaceable with ECC88/6DJ8/6922/6N1P/6N23P)
• Component assembly: Power Supply - PRINTED / Audio Section - POINT TO POINT
• Dimensions (WDH): 24 x 19 x 14 cm
• Weight 2.5 kg

On request with ALPS potentiometer blue (add €20)
Can be also be delivered as transformer coupled.

http://www.tpaudio.it/cf-otl/



TPaudio CF-4T-OTL (€262)

TPaudio CF-4T-OTL.jpg
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TPaudio CF-4T-TOR.jpg
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For headphones between 30 and 600 ohm. Usable alone, or inserted between CD-player and amplifier, or beween pre-amp and power amplifier. Does not negatively influence the signal path. Gold plated RCA input and output connectors. 6.3 mm headphone jack. Cabinet in brushed stainless steel, side panels in solid ash or cherry .

• High Level Inputs: CD
• Sensitivity 'input: 250 mV
• Input impedance: 100 Kohm
• Output impedance: For 30 to 600 ohm headphones
• Output power of 0.7 watts per channel
• Frequency Response: 30Hz -80 000 Hz + - 1.5 dB
• S/N Ratio: 90dB
• Operation: Class A + SRPP
• Standard valves: 2x EC86, 2x ECC88 (replaceable with 6N1P/E88CC/6DJ8/6N23P)
• Component assembly: Power Supply - PRINTED / Audio Section - POINT TO POINT
• Dimensions (WDH): 24 x 19 x 14 cm
• Weight 2.5 kg

On request with ALPS potentiometer blue (add €20).
Can be also be delivered as transformer coupled.

http://www.tpaudio.it/cf-4t-otl/



TPaudio CF-OTL6080 V2.0 (€375)

TPaudio CF-OTL6080 V2.0.jpg
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• High Level Inputs: CD
• Sensitivity input: 250 mV
• Input impedance: 100 Kohm
• Output impedance: For 30 to 600 ohm headphones
• Output power of 1.8 watts rms per channel
• Frequency Response: 25 Hz to 100,000 + -1.5 dB
• S / N Ratio -90 dB
• Headphone Jack: XLR-4-pin JACK
• Operation: Class A + SRPP
• Standard valves: 2x EC86, 2x 6AS7-6080
• Component assembly: Power Supply - POINT TO POINT / Audio Section - POINT TO POINT
• Silver aluminum enclosure, side panels in solid beech or mahogany
• Dimensions (WDH): 26 x 35 x 16 cm
• Weight 6 kg

On request with ALPS potentiometer blue (add €20).

http://www.tpaudio.it/cf-otl6080/



Custom Orders

TPaudio Custom Built 1.jpg
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TPaudio Custom Built 2.jpg
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TPaudio Custom Built 3.jpg
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(Note: Mentioned prices are from 2014, prices today are unknown)
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Re: Rør, hvis du tør - S.I. Audio

Indlægaf kvik » 9. feb 2014, 00:54

S.I. Audio Intimo MK2 (€2400)

S.I. Audio Intimo MK2.jpg
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OTL Class-A Headphone Amplifier

Features:
• 2x 1 Watt RMS
• Designed for 8 to 600 ohm headphones
• Silent operation. Distortion of entities contained and corrected spectrum.
• Automatic optimization of the operating point of the power tubes throughout the whole of their lives.
• Triode in all aspects of amplification, including the final stage.
• Two frames, a separate supply valve. Completely dual mono.
• Total absence of feedback.
• Ability to use up to two headphones (6.3mm Jack)
• Headphone handling optimized to reduce distortion and extend the bandwidth.
• Power valves matched and designed specifically for OTL circuits and SRPP: reliability, long life, easy availability in the future.
• 2 power transformers, designed for audio use, CE/ISO with total power of over 200 VA – primary/secondary screen to eliminate interference. Printed circuit board with double thickness tracks - vetronite low dielectric loss. Passive components from primary brands.
• Wood finish or Plex
• Optional: Floating balanced input €250

Specifications:
• Freq response: 2-100,000 hz +/-1dB
• THD: 0.1%
• S/N ratio: 106 dB
• Inputs: 1x RCA/XLR Line
• Unbalanced output: 2x Headphone Jack 6.3mm
• Balanced output: 2x XLR (right channel and left channel)
• Load impedance: 8-600 ohm
• Sensitivity: 250mV/47 kohm
• Valves: 2x ECC82, 4x 6H30, 2x 6L6GC

http://www.siaudio.it/index.php?option= ... Itemid=172
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 - ARG.audio

Indlægaf kvik » 9. feb 2014, 02:05

ARG.audio DYANA 645 SE

ARG.audio DYANA 645 SE.jpg
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A Monotriode.. Why a monotriode? A low power single-ended tube, combined with high efficiency loudspeakers, allow the achievement of a very particular sound realism in itself, full of consistency, transparency and with a dynamic really unthinkable without listening fatigue.

The Diana 645 SE has its strength in manufacturing simplicity (few components, but good and above all used well!), has no negative feedback, even local!! Has no passive component (resistor, capacitor ...) in the signal path that can introduce colorations or distortions, except a resistor on the grid (Kiwame non-inductive).


Specifications
• Max. Power: 1,5 Wrms
• Tubes: 2x 6C45P-I
• Total harmonic distortion (THD unweighted): 0,015% 20Hz-20kHz
• THD max: < 0,6%
• Input impedance: 47 kOhm
• Frequency response: 20Hz-75kHz ±2dB
• Output impedance: 16, 25, 32 Ohm
• AC: 230V
• Weight: 13kg

http://www.argaudio.it/dyana-se645.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 - Sophia Electric

Indlægaf kvik » 9. feb 2014, 02:08

Sophia Electric Baby Amplifier II ($1400)

Sophia Electric Baby Amp II.jpg
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Sophia Electric single ended integrated Baby Amplifier delivers 5 watts per channel x 2 of glorious lush magical sound, exceptional wide bandwidth, resolution and dynamics. More powerful than typical 2A3 single ended amplifiers. It can drive Sophia Electric made Model One(88dB) and Model Two speakers(88 dB) nicely in a typical home setting or in an office.

Retail Price $999.99

Optional headphone amplifier function is being built on custom order at $399.99 extra, perfect for high impedance headphones HD600, HD650, Hifiman HE600 as well as low impedance Grado 125, Philips 9500, and Sony headphones. All above mentioned headphone models have been tested. Other headphones with similar impedance characters should work as well.

This single ended Baby headphone amplifier has transformer output, so the sonic performance is light-years ahead of those entry level headphone amplifiers that do not have transformer output.

Since 2001, Sophia Electric Baby Amplifier has built a track record for Audiophile sonic performance and superior reliability. This new single ended Baby amplifier is expected to be a winner as well.



Specifications
• Power: 5 watts x 2 single ended class A circuit
• Input: Two pairs of RCA inputs (CD and AUX)
• Output: Mil Grade 6P1T x 2
• Input/Driver tube: NOS 6J1 x 2
• Frequency: 12Hz-40KHz
• Hum: 1mv or less
• Weight: 20 pounds
• AC Power: 120V/60Hz or 235V/50Hz
• Required break in time: 50-100 hours
• Warranty: One year parts and labor, Sophia electric brand tubes one year, Non-Sophia Electric tubes 6 month


http://www.sophiaelectric.com/pages/amp/Baby_SE_II.htm
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