Rør, hvis du tør



Re: Rør, hvis du tør

Indlægaf Claus-DK » 15. jan 2014, 15:38

popsy popsy popsy popsy
Jeg synes det samme som Larry. thumbs
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Re: Rør, hvis du tør

Indlægaf superpronker » 15. jan 2014, 16:01

+1... shit hvor ser det lækkert ud!! So much grej, so little pæng...
Bøffer: LCD-2 | D7000 | T70 | D2000 | k701
Amp/dac: RWA LFP-V | M-dac | Stello DA100 | Ibasso D12
In-ear: Sennheiser IE80 | Momentum IEi | Brainwavs R1
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Re: Rør, hvis du tør - MapleTree Audio Design

Indlægaf kvik » 15. jan 2014, 17:09

MAD Ear+ HD ($790)

MAD Ear+ HD.jpg
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• Outstanding performance with a wide range of headphone impedances and drive requirements.
• 2 x 12B4A NOS and 1 x 5751/12AX7/ECC83 tubes.
• High and low impedance headhone jacks.
• Premium passive components include Panasonic polypropylene output capacitors and Alps volume control.
• Ultra high-speed rectifier diodes.
• Line source output or passive preamp output.
• Dual switched source inputs.
• Available with red/black/white/yellow/blue/green chassis top with anodized aluminum side panels.
• Dimensions: 6" x 10" footprint x 5" tall
• Weight: 8 lb



SugarMaple Sidewinder ($820)

SugarMaple Sidewinder.jpg
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The latest take on the Ear+ HD theme features ultra-low output impedance and ample opportunity for tube rolling with new and NOS 6DJ8 and 12AX7 tubes and variants.

• Measured output impedance at 1 kHz: LoZ 0.75 Ω and HiZ 1.5 Ω
• Input impedance: 50 kΩ
• Hum and noise at output: less than 7 V rms (112 dB below max. output) Recommended load impedance: 30–600 Ω
• Phase: non­inverting
• Power consumption: 25 W, 120 VAC ( 240 VAC Europe) 50­60 Hz

http://hollowstate.netfirms.com/manuals ... Manual.pdf



SugarMaple OD300 ($930)

SugarMaple OD300.jpg
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The first new product under the SugarMable banner is the OD300 (Octal Duo) Headphone Amplifier. It uses the same output tube as the HD300 (6080, special 6AS7G) but with a 6SL7 triode driver stage. Polypropylene output caps are standard and circuit refinements ensure a flat frequency response form 20 Hz to 20000 kHz. The high output power (over 1 W into 16 Ohms!) and low driving impedance of the 6080 easily handles any headphone sensitivity and impedance characteristic.

• Output impedance at 1 kHz: 3.2 Ω
• Input impedance: 50 kΩ
• Gain: 8 dB
• Hum and noise at output: less than 3 V rms (120 dB below max. output)
• Recommended load impedance: 25–600 Ω
• Phase: non­inverting
• Power consumption: 40 W, 120 VAC ( 240 VAC Europe) 50­60 Hz

http://hollowstate.netfirms.com/manuals ... Manual.pdf



SugarMaple Viper ($820)

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This is the latest evolution of the SugarMaple line of headphone amplifiers and is designed for high impedance headphones (such as Sennheiser HD600-850). It is output transfomerless! For specs see comparison chart below.



Mapletree/SugarMaple Comparison Chart



http://hollowstate.netfirms.com/#headphone%20amps
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 - ECP Audio

Indlægaf kvik » 15. jan 2014, 17:11

ECP Audio T4 Headphone Amplifier ($2200)

ECP T4 HPA.jpg
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This is it! The T4 differential hybrid parafeed headphone amplifier, custom assembled by Beezar Audio. Created by ECP Audio's Dsavitsk, the T4 continues in the tradition of the Torpedo III with its totally unique design in the world of headphone audio. The Torpedo III combines tubes with a fully differential solid-state output, feeding into custom-manufacture Lundahl output transformers for the finest single-ended, zero-feedback output. The result is perhaps the finest tube headphone amplifier available anywhere at this price point.

Why a fully differential circuit but single-ended on the output? Answer: Because circuit/device distortion is fully cancelled out by the solid-state output portion of the circuit. At the same time, combining the solid-state output with the tubes results in more power than would be available simply from the tubes. The output transformers assist with this, ensuring that ample current and voltage are available, regardless of the impedance of the load.

As before, ECP Audio designed the T4 headphone amplifier to utilize the ubiquitous 12A*7 audio tube family. Specifically, the T4 is designed for the 12AY7 or 12AT7 tube, but others can be used that meet the general 12AT/U/V/X/Y/Z/7 tube specifications. There are many, many other tube types that will work, too. Refer to the Torpedo III website for a list. All tubes that worked in the Torpedo III should perform excellently in the T4.

The T4 includes a "Z" switch that allows switching between low and high-impedance loads (75 to 300 ohms). This switch may be thrown at any time - even while music is playing and headphones are plugged in. Note also that with a true, output-transformer-coupled amp, there is no need for any kind of power-on or power-off protection.


Features:
• Custom machined and finished casework with hand-oiled wood sides
• ECP Audio custom-designed Lundahl output transformers
• SumR toroidal power transformer.
• New thin-film Vishay/Beyschlag resistors throughout
• Special Vishay low-noise nickel chrome tube plate resistors
• SMD differential circuit with thermal bar, full case dissipation for optimum heat transfer

http://www.ecpaudio.com
http://www.beezar.com/catalog/product_i ... cts_id=193
https://www.superbestaudiofriends.org/i ... fier.6720/
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 - Do It Yourself

Indlægaf kvik » 15. jan 2014, 19:31

Tom Christiansen’s Damn Good 300B SET Amp

Tom Christiansen’s Damn Good 300B SET Amp.jpg
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http://www.neurochrome.com/audio/
http://www.neurochrome.com/audio/?page_id=543
http://www.head-fi.org/t/664903/the-chr ... ild-thread



Abraxas Audio ( Jeff Larson's ) Spud 6CL6 SEP amp

Abraxas Audio ( Jeff Larson's ) Spud 6CL6 SEP amp.jpg
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http://www.head-fi.org/t/529140/show-us ... t_10065168
http://www.diyaudio.com/forums/tubes-va ... d-pcb.html
http://www.neurochrome.com/audio/?page_id=815



The ECP Audio / Beezar Torpedo Headphone Amplifier

ECP Audio - Beezar Torpedo.jpg
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It's been a long time coming; Dsavitsk started looking for builders for his prototype of the Torpedo, a CCS loaded, transformer coupled parafeed headphone amplifier back in March of 2010. The Torpedo is a simplified and more affordable version of the ECP Audio L'espressivo spud headphone amplifier and works with 6J6 tubes and equivalents, including the 5964 and 5844. The shortkit was just recently made available in December 2011 on Beezar after a number of DIY enthusiasts built the initial prototype and includes the chassis, custom transfomers from Edcor and the PCB. The remainder of the parts are listed in the bill of materials and can be purchased from the usual suspects (Mouser, Digikey, etc.). The total build cost, if not going crazy, should fall under $300.

http://www.diyaudioblog.com/2012/01/ecp ... phone.html
http://diyforums.org/Torpedo/TORPEDOoverview.php



Pete Millett’s Jonokuchi Headphone/Speaker Amplifer

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Pete Millett’s Jonokuchi built 2.jpg
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http://www.pmillett.com/jonokuchi.htm
http://www.diyaudioblog.com/2011/02/sta ... kuchi.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

Indlægaf Claus-DK » 16. jan 2014, 00:24

BURNING kan du så få nogle billeder af Solvins rørforstærker op, jeg ved du har nogle..
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Re: Rør, hvis du tør - Schiit Audio

Indlægaf kvik » 16. jan 2014, 19:58

Schiit Vali 2 ($150)

Schiit Vali 2.jpg
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Welcome to the most affordable serious tube hybrid amp on the planet—with performance and versatility that eclipse amps costing much, much more. The all-new Vali 2 is a great way to get started with tube sound, without needing a second mortgage!

Some inexpensive (and not-so-inexpensive) tube amps don’t use tubes to their full potential, “starving” them with low plate voltages or using op-amp buffers for output. Not Vali 2. Vali 2 uses a unique, class-leading power supply that gives us 60V on the plate. Combined with a fully discrete, current-mode noninverting hybrid topology, Vali 2 redefines what you can expect from an affordable tube amp, even at 2x its price.

Vali 2 is supplied with a single NOS 6BZ7 tube, which can be swapped for the same tubes we use in Lyr 2 and Mjolnir 2—feel free to use virtually any ECC88, 6922, 6DJ8, 2492, etc to “roll” the sound to your own preference. Plus, you only need a single tube, so rolling is easy and more affordable!

Vali delivers 1W into 32 ohms for hard-to-drive headphones—and, at the same time, offers a low gain mode for low-noise performance with sensitive headphones. You can also use the preamp outputs to add a tube preamp to your power amp or powered monitors.


Specifications
• Frequency Response: 20Hz-20Khz, -0.2db, 5Hz-150KHz, -3dB
• Maximum Power, 16 ohms: 1300mW RMS per channel
• Maximum Power, 32 ohms: 1000mW RMS per channel
• Maximum Power, 50 ohms: 650mW RMS per channel
• Maximum Power, 300 ohms: 270mW RMS per channel
• Maximum Power, 600 ohms: 140mW RMS per channel
• THD: <0.03%, 20Hz-20KHz, at 1V RMS, low gain
• IMD: <0.05%, CCIR, low gain
• SNR: >99db, unweighted, referenced to 1V RMS, low gain
• Crosstalk: -68dB, 20Hz-20KHz
• Output Impedance: 1.2 ohms in low gain mode, 5.8 ohms in high gain mode
• Gain: 5 (14dB) or 1.25 (2dB)
• Topology: Tube voltage gain with convolved bipolar current mode inverter and discrete bipolar class AB output stage
• Protection: delayed start and fast shut-down with muting relay
• Power Supply: wall wart with 24VAC and 6VAC outputs, regulated HV and LV rails for tube and bipolar components, 6V AC heater
• Power Consumption: 9W
• Size: 5 x 3.5 x 2.75”
• Weight: 1 lb

http://schiit.com/products/vali-2



Schiit Valhalla 2 ($350)

Schiit Valhalla 2.jpg
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Triode OTL headphone amp and preamp

Go ahead. Do things with Valhalla 2 that you’d never attempt with other OTL tube amps. Run low-impedance headphones. Use IEMs. Valhalla 2 is a complete re-imagining of Valhalla, with improved performance, higher output capability, lower distortion and output impedance.

Valhalla 2 also adds two important features: preamp outs and a gain switch. Preamp outs let you connect your powered monitors directly to Valhalla 2, to give them some of what some people call “tube magic.” The gain switch gives you better control of both output level and impedance, for better matching to your headphones. It's easy to build a complete desktop system around the Valhalla.


Specifications
• Frequency Response: 20Hz-20Khz, -0.1db, 7Hz-200KHz, -3dB
• Maximum Power, 50 ohms: 180mW RMS per channel
• Maximum Power, 300 ohms: 800mW RMS per channel
• Maximum Power, 600 ohms: 450mW RMS per channel
• THD: < 0.02%, 20Hz-20KHz, at 1V RMS, high gain (worst case)
• IMD: < 0.03%, CCIF at 1V RMS, high gain (worst case)
• SNR: > 98db, unweighted, referenced to 1V RMS, low gain
• Crosstalk: < -71dB, 20 Hz-20KHz
• Output Impedance: 14 ohms (hi gain), 3.5 ohms (lo gain)
• Gain: 7 (16.9db) or 1.5 (3.5 db), via rear switch
• Topology: All-triode, noninverting, single voltage gain stage, current source biased front end and optimized WCF output stage, DC-coupled input
• Tube Complement: 6N1P dual triode input, 6N6P dual triode output, 1 each per channel. 6N1Ps rollable to 6DJ8, E88CC, 6922, 6BZ7, and similar types.
• Power Supply: Two internal power transformers with over 2,000uF of filter capacitance
• Power Consumption: 40W
• Size: 9 x 6 x 3.25”
• Weight: 7 lbs

http://schiit.com/products/valhalla-2



Schiit Lyr 3 ($ 500)

Schiit Lyr 3.jpg
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Hybrid Modular Headamp/DAC/Phone Preamp

To improve on Lyr 2, we had to completely reinvent the amp, introduce two new technologies, and make it modular. Yes, that’s right. Not only is the new Lyr 3 a big sonic upgrade, it can be configured with the DAC or phono preamp of your choice—just like Jotunheim.

Want to run IEMs? Sure. Need power for your HE-6? Sure. If this means nothing to you, just be confident that you can plug any headphone into Lyr 3 and get great sound. With full power delivered from the standard ¼” jack, you don’t need balanced headphones to take full advantage of Lyr 3.

Select from the internal card or rear-panel analog input, and pick high or low gain with convenient front switches. Connect the preamp output to your powered monitors for a complete desktop system—or use it as a front end to your speaker power amplifier. Lyr 3 provides all the flexibility you need.

Now, you can enjoy a serious tube amp—that only requires a single tube. Our Coherence™ hybrid topology makes the most out of the supplied NOS 6N8S tube, and also works with all NOS and new-production 6SN7 tube types. What’s more, Lyr 3 introduces Continuity™—a constant transconductance output stage which provides superior performance.

Select from two different DAC modules, a phono input module, or no module at all to tailor Lyr 3 exactly to your needs. Modular design means Lyr 3 won’t be dumpster-fodder when technology changes—just swap a card!
- Multibit DAC Module. Choose the optional Multibit DAC Module to get Schiit’s unique digital filter and true multibit DAC architecture, as used in Modi Multibit and Bifrost Multibit, for $200.
- AK4490 DAC Module. Or choose the more affordable AK4490 G2 DAC module for a world-class delta-sigma DAC for only $100.
- MM Phono Input Module. Or, choose the MM phono input module, for 42dB of gain and passive RIAA, for great phono sound, at only $100.



Specifications
• Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-700KHz, -3dB
• Maximum Power, 16 ohms: 9.0W RMS per channel
• Maximum Power, 32 ohms: 6.0W RMS per channel (7.5W at <1% THD typical, one channel driven)
• Maximum Power, 50 ohms: 4.0W RMS per channel
• Maximum Power, 300 ohms: 900mW RMS per channel
• Maximum Power, 600 ohms: 450mW RMS per channel
• THD: < 0.007%, 20Hz-20KHz, at 1V RMS, high gain (worst case)
• IMD: < 0.005%, CCIR at 1V RMS, high gain (worst case)
• SNR: > 102db, unweighted, referenced to 1V RMS, in gain = 1.5 mode
• Crosstalk: < -75dB, 20 Hz-20KHz
• Output Impedance: 0.3 ohms, high gain (worst case)
• Gain: 7.5 (17.5db) or 1.5 (3.5db)
• Topology: fully discrete, current-mode noninverting 6SN7/bipolar hybrid with constant transconductance output stage
• Protection: standard muting relay for delayed turn-on and fast turn-off
• Power Supply: two internal power transformers with 72VA total rating, plus with over 55,000uf of filter capacitance
• Power Consumption: 30W
• Size: 9 x 6 x 2.25”
• Weight: 6 lbs

Optional Multibit DAC:
• USB Input Receiver: C-Media CM6631A
• D/A Conversion IC: Analog Devices AD5547
• Digital Filter: Schiit Comboburrito Time- and Frequency-domain Optimized DSP filter
• Input Capability: up to 24/192
• Analog Output: fully differential, active summing and filtering
• Frequency Response: 20Hz-20KHz, +/-0.25dB, 2-100kHz, -3dB
• THD: <0.005%, 20Hz-20KHz, full scale
• IMD: <0.006%, CCIR
• S/N: >109dB, referenced to 2V RMS, unweighted

Optional Dual AK4490 G2 DAC:
• USB Input Receiver: C-Media CM6631A
• D/A Conversion IC: AK4490 x 2
• Input Capability: up to 24/192, including 24/176.4
• Analog Output: fully differential, passive summing and passive filtering
• Frequency Response: 20Hz-20KHz, +/-0.1dB, 2-100kHz, -3dB
• THD: <0.0015%, 20Hz-20KHz, full scale
• IMD: <0.002%, CCIR
• S/N: >110dB, referenced to 2V RMS, unweighted

Optional Passive Filtered Phono Stage:
• Gain: 42dB
• THD: <0.01%, A-weighted, at 1V RMS
• SNR: >80dB, A-weighted, inputs shorted
• Crosstalk: -70dB, 20-20kHz
• Sensitivity: 2.3mV for 400mV output
• Overload Margin: >20dB
• Input Impedance: 47k ohms
• Input Capacitance: 100pf
• RIAA Accuracy: +/- 0.25dB, 20-20kHz
• Topology: Fully passive RIAA network with AD8599 gain stages and PET film capacitors throughout, DC coupled, with DC servo

http://www.schiit.com/products/lyr-3



Schiit Mjolnir 2 ($850)

Schiit Mjolnir 2.jpg
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Tube or solid state balanced headphone amplifier

Wait. Tube or solid-state? Yes. Not only is Mjolnir 2 the only balanced tube hybrid headphone amp, it introduces our all-new LISST solid-state tube option for a 100% solid-state option. In terms of performance, it is a unique end-game headphone amp fully ready for any headphone, from IEMs to the hardest-to-drive planars.

Yes, that’s right. You can get Mjolnir 2 as a tube hybrid, or as a pure solid-state amp—or get both, and swap out as you’d like. You can also swap the standard 6BZ7 tubes for anything in the 6DJ8, 6922, ECC88, and 2492 families, to “roll” the sound to your specific preference. Or just opt for the Schiit LISST (Linear, Integral Solid-State Tube) for a 100% solid state amp.

Mjolnir 2 puts out up to 8W/channel into 32 ohms, but is fully ready for high-sensitivity headphones with switchable gain. Use the standard gain of 8 for hard-to-drive headphones, or switch to a gain of 1 for sensitive on-ear models and IEMs. In addition, Mjolnir 2 also offers both balanced and single-ended input, switchable via the front panel. Want more? How about both balanced and single-ended headphone outputs and balanced and single-ended preamp outputs. Mjolnir also makes a great preamp for your power amps or powered monitors.

Mjolnir uses our exclusive, inherently balanced and differential Crossfet topology—the only circlotron-style topology in a headphone amplifier (well, except for Ragnarok.) It’s balanced in and balanced out, with a custom 4-gang RK27 Alps volume pot—providing end-game performance for a mid-level price.


Specifications
• Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-400KHz, -3dB

• Maximum Power, 32 ohms: 8.0W RMS per channel

• Maximum Power, 50 ohms: 5.0W RMS per channel

• Maximum Power, 300 ohms: 850mW RMS per channel

• Maximum Power, 600 ohms: 425mW RMS per channel

• THD: <0.005%, 20Hz-20KHz, at 1V RMS

• IMD: <0.006%, CCIF
, at 1V RMS
• SNR: >104db, unweighted, referenced to 1V RMS, in low gain mode
• Crosstalk: >-75dB, 20 Hz-20KHz

• Output Impedance: 1 ohm 
(high gain), 0.3 ohms (low gain)
• Gain: 8 (18dB) or 1(0db), via front-panel switch
• Topology: Tube voltage gain or solid-state tube voltage gain, cross-shunt push-pull Crossfet output stage, noninverting, single voltage gain stage

• Power Supply: specific Circlotron 4-secondary output stage transformer with over 65,000uF filter capacitance, plus dedicated transformer for high-voltage discrete-regulated front end stage with 200V rails and over 4,000uf of filter capacitance

• Inputs: one pair balanced XLR, one pair single-ended RCAs, switchable via front panel switch
• Outputs: one 4-pin balanced female XLR, one ¼” TRS phono, one pair 3-pin male XLR preamp, one pair single-ended RCA
• Power Consumption: 45W

• Size: 16 x 8.75 x 2.25”

• Weight: 13 lbs

http://schiit.com/products/mjolnir-2
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 - Hafler

Indlægaf kvik » 16. jan 2014, 19:59

Hafler HA75 'Tube Head' ($1000)

Hafler HA75 'Tube Head'.jpg
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The Hafler HA75 is a ‘vintage inspired’ headphone amplifier that has been meticulously designed to produce Hafler’s legendary sound quality while adding excitement and character of a real tube circuit to optimize the listening experience.

The design begins with a 14 gauge steel casing to shield the internal workings from external magnetic fields and RF contamination. This is complimented with a black anodized aluminum front panel for clean, esthetic appeal. A choice of either unbalanced RCA or balanced XLR inputs are available. These are gold-plated to eliminate tarnishing over time while optimizing signal flow.

Inside, a 100% discrete class-A head-amp combines with a 12AX7 tube drive to power the headphones. This employs a unique non-radiating charge pump that applies 140 volts to the tube to maximize headroom as it delivers the character and warmth that so many listeners prefer over solid state counterparts. Unique to the HA75 is a negative feedback control. This enables the user to increase or decrease the negative feedback to produce either a more ‘clinical’ (solid state) or a ‘warmer’ (tube) response, further enhancing the signal path for the type of program material that is at play. To simulate the response of listening to loudspeakers in an acoustic space, a Focus control may be engaged that brings the stereo image to the center via a fully variable potentiometer. This active control activates a matrix that delivers exciting results without collapsing the stereo image. A Vox function warms the tone akin to an old-school loudness control, addressing the Fletcher-Munson curves to deliver equal loudness when listening at low levels. The Vox control can also can be used and create a ‘boom-box’ effect for those that enjoy a more exaggerated response.

The HA75’s heavy duty amplifier stage is able to handle all types of headphone impedances from 8 Ohms to 400 Ohms without choking as it quietly delivers plenty of warmth and character to truly enhance the listening experience.


Specifications:
• Circuit: Discrete class-A with 12AX7
• Inputs: Switchable RCA or XLR
• Thru-puts: RCA (left/right)
• Output: 1/4" TRS Headphone
• Impedance: 8 Ohm ~ 400 Ohm
• Gain: 30 dB
• Max Output: 5 V RMS

http://www.hafler.com/ha75.php



Hafler HA75-DAC ($1300)

Hafler HA75-DAC.jpg
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The Hafler HA75-DAC is an audiophile tube-based headphone amplifier and USB digital-to-analog converter, with a number of useful and innovative features that excite and enhance the listening experience.

The uncompromising design of this amplifier builds upon the foundation of the original HA-75, which has received praise from many of the ‘golden ears’ of the recording industry for the incredible clarity, warmth, and character provided by its tube-based topology. This same circuitry and 12AX7 tube is employed on the HA75-DAC, with the addition of a USB input for monitoring high-fidelity digital audio up to 192 kHz. Analog inputs are provided via RCA and balanced XLR connectors, and a selector switch on the front of the HA75-DAC allows you to easily switch between analog and digital sources.

A number of additional features allow you to tailor the performance of the HA75-DAC to suit both your listening style and your headphones. The Focus control simulates the experience of listening to speakers in a room, using an active matrix that can be dialed in according to taste. A three-position voicing switch allows you to adapt to the balance of your headphones or the source material by applying a loudness curve or enhancing the bass response; the voicing circuit can also be bypassed for a neutral response. Another exciting addition is the load selector switch, which allows you to tailor the output impedance to match any pair of headphones available.

The chassis of the HA75-DAC is built from 14-gauge steel to block stray magnetic interference, and the back panel features gold-plated RCA connectors to ensure optimal signal transfer. Additional ‘thru’ and ‘tube out’ RCA outputs allow you to use the HA75-DAC to feed another input device, or connect between a preamp and power amplifier to impart the character of the 12AX7 tube.

The HA75-DAC blends superior engineering with powerful user-controlled features to provide an exceptional and unique listening experience, allowing you to enjoy your music like never before.



Features
• 12AX7 tube drive featuring 100% discrete class-A audio circuitry
• Variable Focus™ control to simulate listening to music with speakers in an open room
• USB input for high-quality digital audio playback, designed to connect to laptop or desktop computers (not supported by iOS and mobile devices).
• Load impedance selector to optimize for any pair of headphones. Works with headphones ranging from 8Ω to 400Ω
• Tube Out: Add the Tubehead's warm tube character to a signal path between a preamp and power amp
• Ultra high quality switches and potentiometers employ steel casings and metal shafts for long-term reliability.
• Glass impregnated nylon XLR connectors are tougher than steel, feature extra-large nickel-silver pin contacts for positive connection that will not tarnish over the years.

Specifications
• Audio Circuit: Discrete class-A with 12AX7 tube
• Analog Inputs: Switchable RCA or XLR
• Digital Input: USB Type B
• Thru-puts: RCA (left/right)
• Output: Dual ¼" TRS Headphone
• Impedance: Selectable 20 - 400 Ohm
• Gain: 30 dB
• Size: 6 ½" (w) x 7 ⅞" (d) x 1 ¾" (h) (165 x 200 x 44mm)
• Power: ±16V 1600mA external supply
• Warranty: 3 year, transferable


http://www.hafler.com/ha75dac.php
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 - Atma-Sphere

Indlægaf kvik » 16. jan 2014, 20:02

Atma-Sphere UV-1 ($1900-2800)

Atma-Sphere UV-1.jpg
Atma-Sphere UV-1.jpg (640.28 KiB) Vist 2159 gange

UV-1 (UltraViolet) basic preamplifier/headphone power amplifier

The UV-1 (UltraViolet) preamplifier is based on a circuit that we have used for many years, but not marketed before. About 40 years ago, Ralph Karsten began developing his own circuit for use for friends on a budget but with high end audio aspirations. It was originally used as a modification to the venerable Dynaco PAS-3. Over a period of decades, the circuit has seen a lot of refinement. It is a simple circuit (and obviously a complete departure from our other products), based on a very capable and refined 6SN7-based line section with a simple phono section based on 12AT7s. We have seen this preamp best preamps costing up to five times more; when we say 'refined', we mean it!

We never really considered marketing the preamp as it is so different from the rest of our product line. But friends and associates convinced us that we had something special, especially for its price so here it is.

The preamp is available in four forms: a basic line stage, a headphone power amp that also works as a line stage, a full function preamp with high output MM capability, or with the addition of a set of Jensen stepup transformers works with any low output moving coil cartridge as well.

The headphone version of the UV-1 uses the full tube complement of the UV-1. It has four inputs and can be used as a line stage as well. This version does not have a phono section.



Features
• Simple zero feedback line section
• Cardas RCA connectors used thoughout
• Standard dual output connections, optionally reconfigurable
• Shunt-style balance control
• Heavy-duty seamless aluminum chassis
• Precision components used throughout
• Low-noise "star" grounding topology
• Three-year general coverage warranty with one year warranty on tubes

Specifications
• Line stage frequency response: 2 Hz-200 KHz, +0 dB, -2dB
• Line stage gain: 15 dB
• Line stage input impedance: 100 Kohm Ω single-ended
• Line stage output: 12V; 17VRMS at clipping
• Output impedance: 400 Ohms from 2Hz to 100KHz
• Phono stage input impedance: 47 K Ω,
• Phono stage input overload: 500 mV
• Phono stage gain: 70 dB (Low Output Moving Coil version)
• Phono bandwidth: 5 Hz-90 KHz within ½ dB
• RIAA accuracy: Within .1 dB
• RIAA Phono sensitivity: ( for 0.5 V @ 1 KHz ) 0.15 mV
• Tube complement: 2 x 12AT7 phono, 2 x 6SN7GT line section
• Dimensions: 15 3/8" wide x 7.5" deep x 5." high
• Weight: 7 lbs.
• Warranty: Three years, transferable. One year for tubes


http://www.atma-sphere.com/Products/#UV-1
Senest rettet af kvik 28. jan 2014, 21:17, rettet i alt 1 gang.
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Re: Rør, hvis du tør - EAR Yoshino

Indlægaf kvik » 16. jan 2014, 20:03

EAR HP-4 (€3748)

EAR HP-4.png
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Tim de Paravicini has long had a worldwide reputation for valve preamplifiers and power amplifiers. Now he has applied his expertise to produce what is arguably the world's finest headphone amplifier aimed at the highest quality dynamic headphones.

The HP4 uses 6SL7 valves, properly matched to the load through de Paravicini's renowned transformers, to deliver nearly 1W of high quality, low distortion power into high or low impedance headphones. The output circuit configuration uses de Paravicini's 'Enhanced Triode Mode', as employed in the highly successful V20 and 859 integrated amplifiers, while the input is also transformer coupled, giving the flexibility to accept balanced or unbalanced signals from the preamplifier.

For the greatest user convenience the HP4 has its own volume control, while input signals can be independently switched through to the power amplifier for headphone and/or loudspeaker listening. As with all EAR products, reliability is paramount and valve life is in excess of 10,000 hours. It has facilities for up to five line inputs, and offers a genuine tape monitoring circuit, making a total of six inputs. A high quality volume control is fitted, as well as a panel mounted power switch. Input and output terminals are gold plated.


http://ear-yoshino.de/vorverstaerker/12-ear-hp4.html
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Re: Rør, hvis du tør - AudioValve

Indlægaf kvik » 16. jan 2014, 20:05

AudioValve RKV Mk II (Standard €2280, Ivory Edition €?, Verto €690, DAC €1000 )

AudioValve RKV Mk II.jpg
AudioValve RKV Mk II.jpg (64.96 KiB) Vist 9609 gange

Ultra high end dynamic headphone OTL tube amplifier.

Specifications:
• OTL - transformer outless tube amplifier
• Double mono construction
• Alps volume control
• 1 pair 6,3 mm stereo jacket for headphones
• Tubes: 4 * PCL 805 (PCL 85 or 18 GV 8 - german old TV "vertikal" ampl. tube )
• Power output: each channel 3 watt SINUS, ( between 100 to 400 ohm loads )
• Bandwide: 15 - 100 000 hz
• Damping 3600 !
• Distortion 0,002 % at 1 Watt-200 Ohm load
• Max. output voltage 80V
• Sens. 0dBm
• IC - full autom. - controlled bias
• Class - a
• Power consumption min. 60 watt
• Size 360*200*120 mm (d.w.h.)
• Weight 6kg
• Patent full automatic servo tube biasing

https://www.audiovalve.info/shop/headph ... ier/rkv-2/

VERTO Step Down/Step Up Transformer: Separate, passive impedancer unit intended for MKII and MKIII (though works with other headphone amps also). Compatible with all STAX electrostatic headphones (one combo 5/6-pin socket). Suitable for low and middle impedance dynamic or planar headphones (two combo 6.3mm/XLR sockets) as well as ultra high efficient loudspeakers (terminals for spade/banana). https://www.eliteaudiouk.com/product-pa ... ransformer



AudioValve RKV Mk III (Standard €3800, Ivory Edition €?, Verto €690, DAC €1000)

AudioValve RKV Mk III.jpg
AudioValve RKV Mk III.jpg (123.49 KiB) Vist 9609 gange

Audio enthusiasts who listen to their music via headphones usually have more than one pair of headphones for their enjoyment. To take this into account, we have developed the new RKV Mark 3 headphone amplifier. This amplifier is designed to offer optimum performance for a variety of low to high impedance headphones. This amplifier will give hours of immersive fatigue free listening and works flawlessly over the entire frequency range. This amplifier is a must have for anyone searching to discover new depths in music and sounds via headphones. The new RKV MARK 3 headphone tube amplifier is a beauty. It's ability to render fully believable, 3D images, replete with harmonic richness is unparalleled. That's what it comes back to, again - music. Amid all the subjective observations and objective measurements that one can muster, the ineffable, emotional feel of the music is what many of us are seeking. And it will be so easy you'll wonder how you ever survived without it. The RKV MARk 3 is simply such a stellar performer it doesn't leave much left to be desired.

FEATURES:
• Consequence double mono design
• 2 * 0,15mm copper for top and bottom layer
• Multi VIA layer grounding basis, pcb design is based on the theoretical principles of the "kelvin - wiring"
• Heavy 3 mm laser cuted steel case - couted
• Clipping indicator ( show you faulty tube or overload )
• 8 power tubes ( 4 per channel ) - PCL805
• Full automatic DC / AC servo biasing
• Multi match transfomers ( PIKATRON ) included
• Power output mode selector - OTL / match - transfomers
• ALPS volume control
• BALANCE pot. +/- 3dB

• 2 * NEUTRIK output combi headphone jackets - 6,3mm & XLR
• 5 * inputs; 2 * RCA & XLR; 2 * RCA only; 1* RCA phono MM out
• 1 * RCA - REC output, offer all connected soures and PHONO too for sec. line ( pre ) amps
• 1 * pair XLR jackets for "power out" for power amps ( OTL output ratio: 10:1 )
• 4 * isolated heavy gold plated stereo speaker terminals

• Green illuminated main power switch for power ON mode
• Heating and plate voltage "soft start" circuit
• Headphone protector circuit
• Reversible heating / plate current limiter
• Installed OPA 134
• Highly accurate implementated stereo MM phono modul - "old school design"

OPTIONS:
• 1 - case color: standard - black or silver -
• 2 - "limited EDITION ivory white colored case" - hand selected parts < 1% tolerances and a lot of more expensive specials

BASIC SPECS:
• Power consumption: 120 watt
• Weight: 10 kg
• Size: 400*340*150mm

https://www.audiovalve.info/shop/headph ... ier/rkv-3/

VERTO Step Down/Step Up Transformer: Separate, passive impedancer unit intended for MKII and MKIII (though works with other headphone amps also). Compatible with all STAX electrostatic headphones (one combo 5/6-pin socket). Suitable for low and middle impedance dynamic or planar headphones (two combo 6.3mm/XLR sockets) as well as ultra high efficient loudspeakers (terminals for spade/banana). https://www.eliteaudiouk.com/product-pa ... ransformer



AudioValve Luminare (Standard €3200, Ivory Editon €?, DAC €1000)

AudioValve Luminare.jpg
AudioValve Luminare.jpg (803.34 KiB) Vist 9609 gange

The AudioValve Luminare/DAC is a superb tube headphone amplifier and DAC capable of driving Electrostatic, Planar Magnetic and Dynamic headphones to their full potential. Sound wise the amplifier delivers great tonality, world class 3D sound stage, a noise floor on par with all but the very best valve based amplifiers, and macro and micro dynamics in spades.

Features
• 2 switchable inputs - XLR/RCA (parallel), and RCA/RCA (In/Out loop)
• 3 switchable output modes - LI (Low-imp), OTL, and STAX
• RCA Pre–Out,  -20dB
• 2x Neutrik combo (6.3/XLR), 1x Neutrik XLR 4-pin, 1x STAX teflon
• Headphone protection circuit
• Alps potentiometer
• +10 dB gain switch
• 2 x 8 watt / 200 ohms load
Tubes: 4 x ECL 85 ( 6F5P )
Damping: 600 ( 200 ohms load )
• Power consumption: 80 VA nominal –  120 VA full load

https://www.audiovalve.info/shop/headph ... /luminare/



AudioValve Solaris (Standard €4600, Ivory Editon €?, DAC €1000)

AudioValve Solaris.jpg
AudioValve Solaris.jpg (609.22 KiB) Vist 9609 gange

The AudioValve Solaris is a state of the art tube headphone/pre amplifier capable of driving Electrostatic, Planar Magnetic and Dynamic headphone to their full potential. Based on the concept of Luminare, the form and equipment of Solaris has been adopted to RKV 3. In addition to the extended equipment features like Balance-control, more inputs and a remote control which has been integrated for Volume, the front plate of Solaris now has the same connection options as Luminare while offering twice the performance on all outputs which on average is 8 to 12 Watts per channel, depending on the headphones’ impedance.

Solaris can be updated and equipped with a DAC and is then called Solaris - DAC. The Solaris-DAC is more than just a headphone amp, it’s more like a Swiss Army Knife in the Audio World, a full-fledged desktop system. It provides inputs for all sorts of headphones including Stax, analog inputs, USB input for music server and computer, MM phono input, pre-amp out for power amps, direct speaker output for high sensitive loudspeaker…



Features
• Consequence double mono design
• 2 x 0.15mm copper for top and bottom layer
• Multi VIA layer grounding basis, pcb design is based on the theoretical principles of the ‘kelvin-wiring’
• Heavy 3mm laser cut steel case - couted
• Clipping indicatior (show you faulty tube or overload)
• 8 power tubes (4 per channel) - 6GV18 (6F5P)
• Fully automatic DC/AC servo biasing
• Multi match transformers (Pikatron) included
• Power output mode selector for: IMP - OTL - STAX modes
• Alps volume remote control
• Balance pot +/- 3dB
• Connectors:
2x Neutrik output combi headphone jacks - 6.3mm & XLR
1x 4-pin headphone jack (Sennheiser)
1x STAX 5-pin headphone jack (2 different bias supported)
5x Inputs; 2x RCA & XLR; 2x RCA only; 1x RCA phone MM out
1x RCA - REC output, offer all connected sources and Phone too for sec.line (pre) amps
1x pair XLR jacks for ‘Power out’ for power amps (OTL output ration 10:1)
4x Isolated heavy gold plated stereo speaker terminals for speakers
• Green illuminated main power switch for power ON mode
• Heating and plate voltage ‘soft start’ circuit
• Headphone protector circuit
• Reversible heating/plate current limiter
• Installed selected OPA134
• Highly accurate implementated stereo MM phone module - ‘old school design’

Options
• Case colour: Standard black or silver
• Limited edition ivory white case - hand selected parts < 1% tolerances and a lot of more expensive specials

Tech. description
• OTL - transformer outless tube amplifier (design 1982)
• Double mono construction
• Power output: Each channel 12 Watt sin at 220R load in OTL mode
• Bandwidth: 15-100k Hz
• Damping: 3600
• S/N ratio: 100 dB
• Distortion: 0.002% at 1 Watt - 200 Ohm load
• Max output OTL-mode: 120 VAC eff
• Max output STAX-mode: 480 VAC
• Gain: OTL-mode 34dB, STAX-mode +12dB by transformer ratio
• Gain switch for all modes: +8 dB
• Input sensitivity: 0 dB, resistence 47k
• Bias voltage: 300 + 580 VDC
• IC - full autom. - controlled bias - class - a mode
• Patent full automatic servo tube biasing
• Power consumption: min. 100 Watt
• Size (DWH): 360 x 320 x 140 mm
• Weight: 10 kg


https://www.audiovalve.info/shop/headph ... o-kopie-2/



AudioValve Assistent 50-HP (€6500)

AudioValve Assistent 50-HP.jpg
AudioValve Assistent 50-HP.jpg (132.87 KiB) Vist 4534 gange

Legendary design, legendary amplifier. One for all - Speaker/Dynamic/Planar/Electrostatic. Pure Class A tube amplifier.

Specifications
• Power: 2x [email protected]
• Inputs: 1-5
• Outputs: 1 tape
• Efficiency: 0 dB
• Input Impedance: 47 kOhm
• Harmonic Distortion: < 0.3% / 20 watt
• Dimensions (WHD): 420x155x320
• Weight: 18 kg
• Modes: On/Off, stand-by, mute
• Functions: all be remote control
• Tubes: 2x ECC83, 2x ECC82, 8x QQE 03/12

https://www.audiovalve.info/shop/headph ... ent-50-hp/
Senest rettet af kvik 2. feb 2014, 11:47, rettet i alt 1 gang.
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Re: Rør, hvis du tør - Mal Valve

Indlægaf kvik » 16. jan 2014, 20:07

Mal Valve Head Amp Three Mk 4 ($6900)

Mal Valve Head Amp Three.jpg
Mal Valve Head Amp Three.jpg (39.04 KiB) Vist 9609 gange

New from Mal Valve. The headphone amp that does it all! Dynamic AND/OR Electrostatic. Fine German engineering from Mal Valve has delivered a one of a kind product for the high end headphone listener.

Upgrade features MK4 version
• New driver stage
• Front-adjustable gain to compensate for different efficiency of the headphones
• Mechanical decoupling of the VC module
• Balance control
• Display brightness control
• New Software
• New output impedances
• New output transformer

Design/Construction
• Operation of electrostatic, magnetostatic and dynamic headphones
• Full tube technique in the signal path
• Completely balanced signal processing in all operation modes
• Balancing of unbalanced input signals
• Input transformer for balancing and galvanic isolation
• Parallel push-pull design
• Class A-operaton in all stages
• In-house made output transformers (x2) for impedance balancing
• In-house made input transformers (x2) with Mu-metal-shielding
• Modular catridge technique
• High resolution volume control via processor-controlled relays and fixed resistors (1%) - 127 x 0.7dB steps
• All switching processes relay-operated
• Switch mode power supply for all supply voltages
• On-off muting
• Individual adaptation to the efficiency of the headphones
• Individual volume adjustment for 4Ω, 16Ω, STAX/ESH and Preamp output (option)
• Remote control (option) for input/volume/mute/display brightness
• Balanced preamp output (option)

Specifications
• Tube complement: 2x ECC 81, 4x EF 184, 4x 6V6
• Inputs: 2x Line XLR, 2x Line RCA
• Input impedans: 100 KΩ
• Input sensitivity: 1V
• Outputs: 2x XLR 4-pin, 2x TRS 6.3mm (or 2x XLR 3-pin (pre out))
• Output power: 2x 12W @4/16Ω
• Output impedance: 4-16 to 600Ω
• Output impedance pre out (option): <1Ω
• High-voltage outputs: 2x STAX Pro, 2x ESH other (option)
• Max voltage: 800 Vss
• Stax Pro bias: 580 VDC
• THD: 0.05%
• Frequency response: 10-50000 Hz
• SNR: 92 dB (A)
• Supply voltage: 90-250 VAC, 50-60 Hz
• Power consumption: 100W
• Standby: 0.3W
• Dimensions (WDH): 483 x 315 x 100 mm
• Weight: 12 kg
• Finish: Black anodized aluminium front plate and chassis (silver optional)
• Accessories: Power cable 2m

http://www.malvalve.de/Headamp3.htm



Mal Valve Power Amp One Mk 6

Mal Valve Power Amp One.jpg
Mal Valve Power Amp One.jpg (446.45 KiB) Vist 9609 gange

Stereo power amplifier with optional external output transformers for loudspeakers, and with optional direct output for electrostatic headphones (Stax) and external head driver for magnetostatic and dynamic headphones.

Design & Construction
• Full tube technique in signal path
• Completely balanced signal processing in all modes
• Balancing unbalanced input signal
• Galvanic isolation by input transformer coupling
• Parallel push-pull design
• Triode- or pentode operation
• Class A-operation in the lower and mid power range
• Transformer impedance much lower as an anode amplifier
• High stability and low distortion also at critical loudspeaker impedance process
• Best compatibility also with magnetostatic and electrostatic loudspeakers
• High impulse fidelity also at low bass range and highest range
• All switch processes relay-controlled (no capacitive cable influences)
• Start-up power limiter
• Optional direct output for electrostatic headphones (Stax)
• External output transformers for positioning near to loudspeakers (option)

Specifications
• Tubes: 6x ECC81, 4x EF 184, 4x KT120
• Power transformers: 1x 800 VA (W) toroidal core power transformer
• Inputs: 1x Line RCA, 1x Line XLR 3-pin
• Input impedance: 470 kOhm
• Input sensivity: 2 V (RMS)
• Balanced power output: 1 x XLR-socket per channel
• Output power: 2 x 100 W at 4/8 Ohm of the output transformer
• High voltage output: 2 x special sockets for Stax-Pro headphones
• Max. output voltage: 1400 Vpp
• Total harmonic distortion (THD): < 0,3 %
• Frequency response: 10 - 60.000 Hz
• Signal-to-noise ratio: > 90 dB (A)
• Power supply: 230/115 VAC, 50 - 60 Hz
• Power consumption idle: 250 Watt
• Power consumption full power: 600 Watt
• Standby: 0,3 Watt
• Dimensions: 400 mm (Ø) x 70/210 mm (H)
• Weight: 22 Kg
• Finish: 10mm brushed alu chassis and transformer cover, black or natural anodized (polished chromed optional)

http://www.malvalve.de/PowerAmp1-E.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 - Manley

Indlægaf kvik » 16. jan 2014, 20:09

Manley Absolute Headphone Amplifier ($2950)

Manley Absolute Headphone Amplifier.jpg
Manley Absolute Headphone Amplifier.jpg (340.62 KiB) Vist 5376 gange

Manley Labs has been designing and manufacturing professional and high fidelity audio equipment since the late 1980’s. In recent years, we have noticed audiophiles increasingly turning to personal headphone listening. To meet this new demand, Manley has combined its professional and domestic engineering skills and experience to develop an exciting and groundbreaking product, The Manley Absolute Headphone Amplifier.

Headphone listening is not new to us; we have been producing headphone personal “Cue Mixers” for recording studios around the globe for over twenty years. In the HiFi world, our legendary Manley Neo-Classic 300B Preamplifier has become a total cult classic with headphone listeners for the last two decades. Reaching forward, we wanted to produce a new standard and load it up with desirable features for a wide-ranged sonic experience set. The new Manley Absolute Headphone Amplifier achieves this goal and more.

There are fifteen independent controls designed for maximum performance and customizable handling of sonic adjustments for a wide variety of audio experience. Of special import are the custom hand-wound air-gapped dual-mode MANLEY IRONⓇ output transformers, designed and manufactured at the Manley Labs factory in Chino, California. With a push of the button, these transformers are easily user-configured to drive three ranges of headphone loads, from 12 to 600 Ohms or greater. Additionally, the output stage can be switched on-the-fly between all-triode Push-Pull and Single-Ended topology.

The Variable Feedback switch applies from 0dB to 10dB of Global Negative Feedback around the amplifying stages while maintaining absolutely ruler-flat frequency response across the audio band, demonstrating how stable this design really is. For absolute transparency and reference tracking accuracy the Volume Control is performed by a Precision Stepped Relay ladder matrix. Furthermore, left-right Balance control is also provided to trim out uneven recordings. The Manley Absolute Headphone Amplifier operates fully symmetrically, enabling it to drive balanced headphones through its XLR outputs. Standard non-balanced ¼” TRS jacks are also provided. When the headphone amplifier is powered down, another very useful feature is included, a direct preamplifier output which routes your first line input through the system to feed an external power amplifier or powered loudspeakers. Useful, as your main audio system source can drive either playback system without having to change upstream cabling. Thus, the Manley Headphone amplifier can also be used as a stand-alone transformer-coupled preamplifier!

The Headphone Overload Protection System is also user-configurable so that exotic and precious headphones are never overdriven. We proudly incorporate our newest innovative purpose-designed-for-audio High Voltage switching power supply into our new Manley Absolute Headphone Amplifier. All super-low impedance DC rails are fully regulated and worlds quieter than any linear supply we have ever encountered. The resulting sound is fast and dynamic with deep punchy bass, dead-quiet inky blacks and superior headroom.

The Manley Absolute Headphone Amplifier also incorporates Bass and Treble Tone Control circuits. What? In an audiophile product?!! Yes! And why not? We have been building legendary equalizers for recording studios for decades. We know how to do this well! Adjust the flavor of the sound to your preference, or invoke total bypass of the EQ circuits for purist listening sessions.


Features
• Balance, Treble and Bass Controls use silent conductive plastic potentiometers
• Tone Bypass for purist signal path
• All switching via high-grade gold-contact relays
• Mono / Stereo function
• Mute Switch
• User adjustable Headphone Overload Protection System
• MANLEY IRONⓇ hand-wound wide bandwidth air-gapped output transformers
• High Speed, Low Impedance, Low Noise custom switching PSU
• Teflon® insulated and gold plated RCA jacks
• Solid billet chassis in black, copper or silver
• Walnut-burl veneer accents for the headphone head-band and ear pad rest areas
• Supplied with Remora RF remote control

Specifications
• Amplifier Topology: Triode Vacuum Tube Output Stage, Switchable Topology Single-Ended or Push-Pull
• Vacuum Tubes: 2 x 12AT7 (ECC81), 4 x 6AQ5A (EL90)
• Inputs: 2 x RCA (Input 1 & Preamp Output = Pass-Thru when amplifier is in Standby or Off)
• Input Impedance: 50 kOhms (Pass-Thru= 300 kOhms)
• Maximum Input Level: 7.7 VAC RMS (+20 dBu)
• Gain: Load 16/62/200 ohm: 12/17/22 dB (Min FB), 3/8/13 dB (Max FB)
• Input Sensitivity: 600 mV AC RMS for an output of 100 mW / 1.9 VAC RMS for an output of 1W
• Volume Control: Precision Stepped Relay Attenuator 0.5dB per step (63dB total attenuation, Volume MIN = MUTE)
• Outputs (transformer coupled): Headphone 1/4" TRS + 4-pin XLR, Preamp 1 pair RCA
• Output Impedance: Switchable - Low 12-50 Ohm, Mid 50-200 Ohm, High 200-600 Ohms
• Maximum Output Power = 1W into 12 Ohms BW 22Hz-22kHz
• Variable Feedback Control (FB): MIN 0dB / MAX 10dB
• Signal to Noise Ratio: 83 dB (1kHz sine wave, 100mW output, BW 22Hz-22kHz)
• Noise Floor: -80 dBu BW 22Hz-22kHz / -85 dBu  A-Weighted
• Channel Crosstalk: -71 dB left ch / -72 dB right ch (1kHz sine wave, 100mW output, BW 22Hz-22kHz)
• Balance Control Channel attenuation: 72 dB left ch / 72 dB right ch (1kHz sine wave, 100mW output, BW 22Hz-22kHz)
• Frequency Response: Push-Pull= Flat 10Hz – 20 kHz (-1dB @ 40 kHz), Single-Ended= 20Hz – 20 kHz (-0.5dB @ 10Hz, -1dB @ 50 kHz)
• Distortion: Push-Pull= 0.16% THD+N (BW 20Hz-22kHz), Single-Ended= 1.0% THD+N (BW 20Hz-22kHz)
• Operating Mains Voltage: 90-250 VAC, 50-60Hz, universal works worldwide
• Power consumption STANDBY mode = 0.5W, Max Power = 80W
• Unit Dimensions: 11.5 x 5.5 x 8.2” (LxWxH)
• Unit Weight: 12 lbs
• Shipping Weight: 13.5 lbs
• Packing Carton Dimensions: 17 x11 x 15”

https://www.manley.com/hifi/mabhpa



Manley Neo-Classic 300B Preamplifier RC ($6100)

Manley Neo Classic 300B Preamplifier RC.jpg
Manley Neo Classic 300B Preamplifier RC.jpg (242.75 KiB) Vist 5376 gange

Our most esoteric product is THE 300B PREAMPLlFIER. This is the first and only preamp to feature these classic tubes. We had been designing the 300B into small power amps for many years and have always had great respect for the smooth natural sound of this tube. However, a single 300B provides truly appropriate power and voltage swing for headphones and makes a remarkable line driver. Here is where the impedances are not too low and the power requirements are not too high: ideal for this kind of tube in a single-ended configuration. This was the genesis of a new preamp.

We combine the historic 300B with another classic, the large octal based 6SL7GT, for the input stage- all triodes running in pure Class A operation. To complement this 'retro' feel, we implemented vacuum tube rectification and regulation in the power supply along with plenty of capacity. We also developed an additional (and innovative) ripple rejection circuit to filter out power supply noise making this an incredibly low-noise preamplifier- especially critical for headphone users.


Specifications
• Inputs: 5 stereo pair unbalanced RCA jacks
• Outputs: 2 stereo pairs MAIN out same as SUB out unbalanced RCA jacks
• RECORD output: 1 stereo pair pre-volume control unbalanced RCA jacks
• HEADPHONE Outs: 2 front panel 1/4" headphone jacks
• Optimized headphone impedance switching: 30-400 Ohms to 300-4000 Ohms
• MUTE: Selecting HEADPHONE operation mutes LlNE outputs
• Output Vacuum Tubes: 2 x 300B Electro-Harmonix
• Input Tubes: 2 x 6SL7GT Russian (Electro-Harmonix or SOVTEK)
• Rectifier Tubes: 2 x 5U4GBEH Electro-Harmonix or 5AR4C by Ruby
• Regulator Tubes: 2 x OD3 NOS JAN USA
• Gain: factory set at 12 dB at max Volume
• Internal Variable Feedback: 8.5 dB of global NFB is used @ 12 dB of gain, adjustable trim -1.7dB to +1dB
• Noise Floor: typically -70 dB (1 Hz - 100 KHz)
• S/N Ratio: typically 105 dB (A WGT, 20 Hz - 20 KHz)
• Frequency Response: 5 Hz to 50 KHz 1dB
• Channel-to-Channel Separation (L to R): @1KHz 48 dB; @10KHz 35 dB; @20KHz 34 dB
• Channel-to-Channel Separation (R to L): @1KHz 50 dB; @10KHz 40 dB; @20KHz 37 dB
• THD: 0.08 % @ 1KHz at 1V rms out
• Distortion THD+N: -80 dB (.01 %) zero "crossover" distortion, mostly 2nd harmonic
• Input Sensitivity: 250mV (-9.8dBu) yields 1V out
• Input Impedance: 100 kOhm Noble volume control
• Maximum Input Level: 5.5dBu or 1.459 Vrms @ 1KHz, volume control at maximum
• Output Impedance (LINE STAGE): 100 Ohms
• Maximum Output Level: 17.2dBu or 5.636 Vrms @ 1KHz, volume control at maximum
• Output Power (100 Ohm Headphones): 1W (10 V RMS) (28 V P-P)
• Output Power (600 Ohm Headphones): 1W( 25 V RMS) (70 V P-P)
• Power Consumption: 170 Watts (1.4 A @ 120VAC)
• Operating Mains Voltage: Factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
• Operating Mains Voltage: changeable with power transformer re-wiring and fuse value change.
• Mains Voltage Frequency: 50~ 60Hz
• Dimensions: W=19" x L=13"
• Top Deck Height: 4"
• Transformer Height: 3 1/2"
• Suggested shelf height minimum: 10" (depending on height of 300B tube)
• Shipping Weight: 28 Ibs.

https://www.manley.com/hifi/neo3br



Manley Stingray II ($5900)

Manley Stingray II.jpg
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The STINGRAY II is the next evolution from our acclaimed Stingray Integrated Amplifier, legendary in the hifi world since it first swam from our labs in 1997. Originally conceived with particular attention paid to optimal component placement for the purity and symmetry of the signal path layout, the Stingray quickly became one of our best-selling products. The Stingray II retains the same basic tube circuitry and marvelous output transformers as the original with some important improvements:

The high voltage tube energy storage has been increased vastly resulting in even more solid and coherent bass control and impact. A headphone jack has been added to the right side facia. This jack re-routes the output from the speaker binding posts and mutes the Subwoofer output feed. This makes the Stingray II a fabulous headphone amplifier! The 4th input source is an 1/8" (3.5mm) TRS mini jack for convenient hookup with portable devices and computers on the left front facia.

The Remote Control works with both Radio Frequency and InfraRed technologies. Using the remote in RF mode gives freedom from having to "point and shoot." The RF remote is omnidirectional and works through walls and cabinets. IR capability is included for those with Universal Learning Remote Controls for consolidated integration into existing systems. The volume control, balance adjust, input switching, and display options are all on the RF/IR Remote Control. Additionally user can perform the MUTE, DIM, INSERT and STANDBY commands with the Remote Control.

Each INPUT can be individually level trimmed to match and to optimize system gain staging of various input devices. The fancy blue LED displays surrounding the INPUT and VOLUME encoder knobs can be dimmed down or turned off entirely, after a user-settable time period, or a "screen-saver" random light sequence can be selected. Speed and intensity of the "Starlight" mode can be tweaked to taste. All custom user settings are hard written into memory when the unit is put into STANDBY mode and thus retained if power is later interrupted.

Individual sealed gold contact relays deliver the selected input into the volume control system before hitting the first 12AT7 input tubes. Following the mighty 6414 driver/phase splitter, the trusty EL84 output stage can be switched between either 20 watts of TRIODE power or 40 watts of Ultra Linear mode push-pull operation. Individual bias for each tube is easily adjusted using the trimpots and test points, conveniently located on the top surface of the amplifier. The Stingray's power supply is extra-rugged and stiff, a MANLEY hallmark. It swims with the sharks: fast, agile, fluid, and with consummate authority.


Specifications
• 3 x Stereo Line RCA Inputs
• 1 x Stereo Line 1/8" TRS mini-jack Input
• TRIODE - UL Output Stage Mode Switching
• RECORDING OUT
• SUBWOOFER OUT
• TAPE LOOP (Insert) with Bypass switch
• 1/4" Headphone OUTPUT (mutes speakers and subwoofer output when deployed)
• Logic controlled Volume and Balance functions
• All-Vacuum Tube Lo-feedback Stereo Integrated Design
• Output Tubes: 8 x EL84 Ships with Russian NOS EL84M (aka 6Pi14Pi-EB)
• Driver Tubes: 2 x 6414 Ships with GE or RAYTHEON JAN NOS USA or 6414W
• Input Tubes: 2 x 12AT7EH Ships with: 12AT7EH large plate Electro-Harmonix Russian
• Maximum Output Power UL mode: 32 Watts x 2 channels 1.5% THD @ 1kHz into 5 Ohms
• Maximum Output Power TRIODE mode: 18 Watts x 2 channels 1.5% THD @ 1kHz into 5 Ohms
• Frequency Response: 15 Hz - 58 kHz, -1dB
• Gain: 35 dB at max Volume
• Input Sensitivity UL Full Power: 210 mV in = 32 watts out into 5 Ohms with volume control at maximum
• Input Sensitivity Triode: 41mV in = 1W into 5 Ohms with volume control at 20dB gain setting
• Input Sensitivity UL: 35mV in = 1W into 5 Ohms with volume control at 20dB gain setting
• Crosstalk: -72dB: See Chart
• S/N Ratio: typically 72 dB A-WGT, 1W output, 20dB gain, Source Z = shorted input
• THD+N Ratio: typically 64 db at 1W output, Bandwidth 22Hz-22kHz, Source = 1kHz Sine wave
• Input Impedance: 12 kOhm nominal
• Optimum Speaker Load: 5 Ohms
• Speaker Terminal Output Impedance at 20Hz: 2.36 Ohms; at 1KHz: 2 Ohms; at 20KHz: 1.83 Ohms
• Damping Factor: 2.4
• Headphone Jack Output Impedance: 53 Ohms
• Scratch Factor: Use pennies under pointed feet to avoid marring cabinetry. Try quarters if you are in upper tax brackets. The bargain performer would be nickels. Paper currency does not function as well. Euro coins work 1.54 times better.
• Remote Control Type: RF (radio frequency) and IR (infrared), user selectable
• Volume Control: Cirrus Digital Level Control System, controlled by Grayhill Rotary Encoders
• Volume Control Range: 102dB in 1dB steps turning slowly, with larger steps as rate of turn increases
• SLEEP timer: 15, 30, 45, 60 minutes
• Power Consumption (Standby): 6W
• Power Consumption Idle: 198W&a

https://www.manley.com/hifi/m2st
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 - Mjölnir Audio

Indlægaf kvik » 16. jan 2014, 20:54

Mjölnir KGST ($3000)

Mjölnir KGST.jpg
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This amplifier has been called the mini BHSE and it is a fitting name. This is a hybrid amplifier and the circuit is similar to the BHSE in many ways. The power supply is similar and so are the first two amplifying stages. The main difference is with the tubes used and how they are used. The KGST uses the tube in a more traditional nature but with the same constant current source as the BHSE. The tubes used are the 6S4A and they handle the output directly with no extra stages needed. There are no external heatsinks and the tubes are fully enclosed in the chassis.

Sound wise they are very similar but the KGST is warmer and more forgiving making it a better match to the SR-009. Like the BHSE it runs very warm so it needs a lot of air to breath. Similar to the KGSSHV this one has a servo which monitors and corrects the output so warmup is less of an issue.


https://mjolnir-audio.com
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 Claus-DK » 17. jan 2014, 02:38

Du bliver jo bare ved, jeg vidste slet ikke der fandtes så mange forskellige rørfætre..
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Re: Rør, hvis du tør

Indlægaf Henrik_sdk » 17. jan 2014, 04:40

Bravo V2 Headphone Amplifier
Billede

Retail Price: 69.99 USD
    In Put Power DC24V
    Input Sensitivity 100mV
    Input Impedance 100KOhm
    Out-Put Impedance 20~600 Ohm
    Gain 30dB
    Frequency response 10Hz-60KHz +/- 0.25dB
    Signal/Noise Ratio >90dB
    Dynamic range 84.6dBA(300 ohm) 89.8dBA(33 ohm)
    THD 0.016%(300 ohm) 0.45%(33 ohm)I
    MD + Noise: 0.045(300 ohm) 0.42(33ohm)
    Dimension 79mm (D) X 79mm (W) X 44mm (H)
    Input Stereo RCA x1, Stereo 3.5mm x1
    Output Stereo 6.35mm x1
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Re: Rør, hvis du tør - SAC Thailand

Indlægaf kvik » 17. jan 2014, 05:14

The Minute 45 Amplifier by SAC Thailand

The Minute 45 Amplifier.jpg
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Minute’s 45 amplifier comes from SAC Thailand, a small boutique audio manufacturer based in Thailand, famous for making world-class output transformers and transformer based volume controls. The Minute 45 is a custom build amp based on the Minute 300B (with the 300B tubes), so you’re not going to find it listed in SAC’s website. If you wish to, SAC can build you an amplifier that will accommodate both the 45 and the 300B tube (you only have to flick a switch to choose the tube to use), but according to them, best sound is achieved when you dedicate the design solely to one tube type, so this build is strictly a 45 tube amplifier.

http://www.headfonia.com/the-minute-45- ... c-thailand
http://www.sacthailand.com



SILK Headphone Amplifier by SAC Thailand

SILK Headphone Amplifier.jpg
SILK Headphone Amplifier.jpg (32.65 KiB) Vist 9609 gange

Most simple head phone circuit utilizes only 1 triode (6C45Pi super tube) to drive line output transformer with 600 ohm output impedance. This special custom made line output transformer however has only 30 ohm DCR at secondary winding. This translates to excellent driving capability without any hint of impurity of any coupling capacitor.

http://www.sacthailand.com/AmpHeadPhone.html



Minuet Single-Ended Class-A Headphone Amplifier by SAC Thailand

Minuet Single-Ended Class-A Headphone Amplifier.jpg
Minuet Single-Ended Class-A Headphone Amplifier.jpg (40.44 KiB) Vist 9609 gange

This custom made vacuum tube head phone amplifier utilizes only 1 triode (6C45Pi super tube) to drive SILK interstage line output transformer that has specific output impedance to deliver the best drive to each high-end headphone. Any output impedance to exactly match your head phone from 30 ohm to 600 ohm can be ordered specifically.

The audio circuit contains only 1 active component, that is 6C45Pi super tube, and just three more passive components, one volume control, one bias resistor, and one interstage line output transformer. we feel that this could be the most simple circuit ever implemented. The most important element to successfully implement this scheme is the quality of Interstage line output transformer. In this case we dedicate to wind SILK I-541-H from best selecting material and winding arrangement in order to achieve ultra-wide bandwidth in term of frequency response (from 10Hz to 80,000Hz at -3.0dB) while keeping the insertion loss to the minimum. The SILK interstage line output transformer performance is so great that we do not have to apply any negative feedback; therefore, this head phone amplifier will deliver unsurpass listening pleasure and purity that contains unmeasurable distortion. While prolong listening to head phone with disturbing IC circuit or transistor with heavy feedback amp or tube circuit with capacitor coupling can cause inevitable listening fatique, this effect is minimized with our design of zero feedback, zero capacitor in line amp.


http://www.sacthailand.com/AmpHeadPhoneC1.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 - Antique Sound Lab

Indlægaf kvik » 17. jan 2014, 18:40

ASL MG HB1 ($350)

ASL MG HB1.jpg
ASL MG HB1.jpg (51.71 KiB) Vist 9609 gange

All class "A'. SET/hybbrid headphone amplifier. Separate power supply

• Output power (feedback) 15mW on 32 Ohm Headphone
• Frequency responsible at 1V 15Hz to 100K -1 db
• Frequency responsible at full power 15Hz to 100K -1db
• Distortion <1%
• S/N Ratio 78dB
• Input impedance 100K
• Power request 30W
• Input sensitive 1V
• Fuse 1A SLOW--BLOW
• Chassis Finished Iron with powder paint

http://www.divertech.com/aslhb1.html



ASL MG Head DT OTL MKIV ($600)

ASL MG Head DT OTL MKIV.jpg
ASL MG Head DT OTL MKIV.jpg (117.99 KiB) Vist 9609 gange

MKIV version, now even better! All tube SET design with OTL/transformer coupled out puts. Upgraded circuit and outboard power supply.

• Output Power 120mW x 2
• Frequency responsible at 1 W 15Hz - 35KHz
• Frequency responsible at full power 19Hz - 40KHz
• Distortion at 1W < 2%
• Distortion at full power < 3%
• S/N Ratio 78dB
• Input impedance 100K
• Output Impedance HIGH - LOW (10 Ohm - 600 Ohm)
• Input sensitive 1V
• Power request 21W
• Fuse 1A Slow blow
• Power cord - Detachable /Fixed Fixed
• Input Sockets RCA Gold Plate
• Output Termininal 3.5mm /6.5mm Mic Jack
• Chassis Finish Polished Iron with powder paint
• Front Panel Finish Aluminium /Gold /Silver or Black Anodizing
• Tube Complement 6BQ5 x 2,12AX7 x 1
• Dimension W x D x H in mm 180×190×160
• Shipping Dimension W x D x H in mm 360 x 280 x 240
• Net Weight /Kg 4.5Kg
• Shipping Weight /Kg 5Kg

http://www.divertech.com/aslmgheaddt_new.html



ASL MG OTL 32 DT ($1100)

ASL MG OTL 32 DT.jpg
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OTL headphone amplifier with excelent preamplifier facilities. High voltage output optimized for AKG K1000 headphones. New! Now includes carved wooden remote control transmitter, tube cage, dual outputs.


Technical Specifications

Preamplifier
• OUTPUT 2V
• Distortion at 0.50%
• Frequency responsible 11Hz--36000Hz + 1dB
• Gain 13
• Noise 80dB
• Input sensitive 580mV

Headphono
• OUTPUT 10mW
• Output impedance 32?
• Frequency responsible 13Hz--19000Hz + 1dB
• Distortion at 3%
• Noise 64 dB
• Output impedance 120?
• Output Power 18mW
• Distortion at 0.50%
• Frequency responsible 18Hz--19000Hz + 1dB
• Noise 77dB
• Output impedance 300?
• Output Power .3W
• Distortion at 1%
• Noise 80dB
• Frequency responsible 19Hz--19000Hz + 1dB
• Power request 58W
• Fuse 2A SLOW--BLOW
• Chassis Finished Black
• Dimensions in in W X D X H 13 X9.5X9
• Shipping dimensions in mm 410 X350 X 310
• Net Weight 7.5Kg/16lb
• Shipping Weight 9Kg/19lb

http://www.divertech.com/aslmgheadotl32.html



ASL Twin Head MKIII DT ($3000)

ASL Twin Head MKIII DT.jpg
ASL Twin Head MKIII DT.jpg (1.58 MiB) Vist 9609 gange

The ultimate preamplifier with headphone output. 2A3 triodes, OTL/transformer outputs, outboard, all tube dual mono P/S. Remote control,

Preamplifier Outputs
• Output Voltage 2V
• Output impedance 10Kohm
• Input impedance 100Kohm
• Distortion 2%
• Frequency Response 28Hz~20KHz±1dB
• S/N Ratio 80dB
• Gain 3.5

Headphone Amplifier (Transformer output)
• Output power 68mW
• Frequency Response 23Hz~21KHz±1dB
• Output impedance 24
• Input sensitive 700mV
• Distortion 3%

Headphone Amplifier (OTL)
• Power output 15mW
• Frequency Response 38Hz~16KHz±1dB
• Distortion 7%
• Output impedance 24
• Input senstivity 350mV
• S/N Ratio 70dB
• Power consumption 138W
• Power Supply Chassis Finished Steel
• Regulator Chassis Finished Black
• Power Supply Dimensions in in W×D×H 11.5×9×10
• Regulator Dimensions in mm W×D×H 340×220×230
• Shipping dimensions in mm 680×480×330
• Total Net Weight 19Kg
• Total Shipping Weight 23Kg

http://www.divertech.com/asltwinhead.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 - Dubiel Acoustics

Indlægaf kvik » 17. jan 2014, 18:43

Dubiel Acoustics HV-1 ($650)

Dubiel Acoustics HV-1.jpg
Dubiel Acoustics HV-1.jpg (229.51 KiB) Vist 9609 gange

Sterephonic tube headamp

• Number of inputs, outputs: 1 - input, 2 outputs “Jack 1/4” (big)
• Input impedancy: 100 kohm
• Input sensitivity: 550 mV
• Output power: 300 mW
• Output inpedancy: 40 ohm
• Load resistance: 30 – 600 ohm
• Signal to noise ratio (curve A): 86 dB
• Transmission band: 5 Hz – 70 kHz (+0-3dB)
• THD unlinear distortions: < 0,7% dla 100 mW, = 1,5 % dla 200 mW
• Maximal power consumption: 60 W
• Phase: positive
• Weight and dimensions: 4 kg, 25x22x19 cm
• Tubes: preamp – 12AT7, final amp – 6080, class A, OTL (Output Transformer Less)

http://en.dubieltubeamps.pl/42/stereoph ... damp-hv-1/
http://vinylborsen.com/dubiel-accoustics/268-hv-1.html
http://www.enjoythemusic.com/magazine/e ... oinhv1.htm



Dubiel Acoustics Eurydice ($3625)

Dubiel Acoustics Eurydice.jpg
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Stereophonic tube amp dedicated to electrostatic high-class headphones

• Works with headphones: STAX PRO (580V bias polar.), Sennheiser HE 90 (Orpheus) (500 V bias polar.)
• Transmission band: 5 Hz-55 khz
• Inputs: 2 switched RCA (XLR for special order)
• Output voltage: 800V ss
• Used tubes: 6SL7 (ECC 83 for special order), PL 841, 5W4.
• Input sensitivity: 500 mV
• THD unlinear distortions: <0,5% dla 100V ss, <5% dla 800V ss
• Signal to noise ratio: 86 dB
• Input impedance: 50 kohm
• Maximal power consumption: 140 W
• Weight: 12 kg.
• Dimensions: 31 x 34 x 21cm (Width/Depth/Height)

http://en.dubieltubeamps.pl/102/eurydic ... eadphones/
http://vinylborsen.com/forstarkare-/429 ... ifier.html

Note: Currently on sale at dubieltubeamps for $3100
Senest rettet af kvik 2. feb 2014, 19:24, rettet i alt 1 gang.
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 - KingSound

Indlægaf kvik » 17. jan 2014, 18:47

KingSound M-20 (€1300)

KingSound M-20.jpg
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Tube Electrostatic Headphone Amplifier

• Frequency Response: 10Hz - 20kHz (40Vrms/output)
• Input Impedance: 47kΩ
• Rated Input Level: 150mV (100V Output)
• Max. Output Voltage: 2x160Vrms
• Gain: 58dB
• Harmonic distortion: 0.01% (at 100Vrms/1kHz output)
• Dimension (mm): 380(W) *155(H) * 115(D)
• Weight: 5.2kg

http://www.kingsaudio.com.hk/m20.html
http://kingsound.fr/portfolio-item/king ... 0/?lang=en
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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