Woo Audio WA-7D. (démo)


Même choses qu’un WA7, mais avec une entrée optique en plus.

Démonstrateur du magasin, très bon état de fonctionnement.

Aucune égratignure, mais décoloration de la peinture noir qui lui donne une couleur bronzé!

Garantie 3 mois (sauf tubes).



« this little amp sounds powerful »

 – The Audiophiliac

« This is possibly the most linear DAC and headphone amp I’ve heard « 

Positive Feedback

« the WA7 is practically a steal in terms of sound quality and physical presentation.  « 

HP Soundings

« The WA7 is a thing of museum-grade beauty and simplicity. »

Ken Rockwell

« The Fireflies is very highly recommended for anyone buying their first, or even possibly their last, reference amplifier. » – Dagogo


The WOO Audio WA7 “Fireflies” Amp/DAC is a combination of high performance vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. It is a pure tube design, utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. There are no semiconductors used in the entire signal path. The D-A converter is designed to be capable of up to 32-bit/192k sampling rates. This maintains pure data integrity, which is transmitted via standard high speed USB 2.0 interface operating in asynchronous mode.

The high quality construction features include a pair of Nickel Alloy core output transformers, all-aluminum chassis with no screws visible from any viewing angles, a remote-controlled linear external power supply for amplification circuitries, a custom built toroidal power transformer, and multi-layer military grade PCBs.

The dedicated port for in-ear-monitors carries a full range of volume controls ensuring minimal noise. Despite its incredibly compact size, “Fireflies” is a power-house with the capacity to drive almost any demanding audiophile headphones. To accommodate different system setup needs, “Fireflies” can also be used as a stand-alone D-A Converter.



  • Single-ended, class-A, transformers output
  • Linear external high-performance power supply (remote-controlled power switching)
  • Two 6C45 driver/power tubes
  • C-Media 6631 USB chip
  • TI PCM5102A 32-bit DAC chip
  • Headphones impedance : 8-600 Ohms
  • Input impedance: 100 Kilo-Ohms
  • Sampling rate: up to 32-Bit, 192kHz
  • Inputs: 1 Asynchronous USB2.0, 1 RCA
  • Outputs: 1 1/4″ and 1 1/8″ headphone outputs, 1 RCA (same connector as the input)
  • Max output: approx 1 watt @ 32 ohms
  • Frequency response: 11Hz to 27kHz, +/-0.5dB
  • Distortion: <0.03%
  • S/N: 95dB
  • Power consumption: 25W max
  • Mains supply: 100-120V, 220-240V, 50/60Hz, user selectable
  • Finish: Anodized aluminum
  • DC cord length: 4.25 ft or 1.3 m
  • Dimension: AMP: 4.8″ L x 4.8″ W x 5.1″ H with glass PSU: 7″ L x 3.5″ W x 2.2″ H
  • Weight: AMP – 5.3 lbs / 2.4kg, Glass – 3.3 lbs / 1.5kg PSU – 2.8 lbs / 1.4kg


  • Handmade output transformer with Nickel Alloy core
  • 32-Bit, 192kHz high resolution playback
  • Ultra-low jitter USB 2.0 runs on Asynchronous mode
  • High and low impedance output facilitated via toggle switch on back panel
  • Open load protection will automatically engage to prevent the amp from damaging when no headphones are plugged in
  • Multi-functional switch for USB input, RCA input, and RCA output via D-A.
  • The RCA connectors can be used either as RCA analog inputs or USB DAC preamp outputs
  • All-aluminum chassis with no screws visible from any viewing angles
  • High clarity tube protection glass
  • Multi-layer military grade PCBs
  • Customized driver for Windows Vista/XP/7/8
  • USB Audio Class 2.0 is natively supported by Apple OS X version 10.6.4 and above without installing driver



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