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WA2 Headphone Amplifier

Woo Audio WA2 amplifier
Woo Audio WA2 amplifier

WA2 Headphone Amplifier

  • In stock, Ships in 1 week
  • Add 3% for international orders


Handcrafted since 2004, the critically acclaimed WA2 is a high performance OTL (Output Transformerless) headphone amplifier. WA2 is a Class-A, all-tube design, single-ended triode (SET) with point-to-point wiring to achieve the most analog sound. Music lovers with high impedance headphones (above 100 Ohms) would find WA2 to be the ideal pairing for their high-end headphones.


  • Tubes: 6080 power x 2, 6922 driver x 2, 6CA4 rectifier x 2
  • Polytetrafluoroethylene (PTFE) tube sockets
  • Single-ended Triode, Class-A
  • OTL (output transformerless), Point-to-Point wiring
  • Individual filter choke and rectifier per channel
  • Pseudo-dual power supply
  • RCA input x 4
  • 1/4" (6.3mm) stereo headphone output
  • ALPS potentiometer and power switch
  • Anodized aluminum chassis, available in black or silver
  • Self-biasing with compatible tubes [chart]
  • Global voltage (100v–220v) without converter
  • Dimensions: 5½"(H), 13"(W), 9"(D), 17 lbs.


 *Specifications and appearance are subject to change for improvement without notice.

*Specifications and appearance are subject to change for improvement without notice.

  • Quick start guide
  • WA2 headphone amplifier x 1
  • 6922 vacuum tube x 2
  • 6080 vacuum tube x 2
  • 6CA4 vacuum tube x 2

*AC power cord and audio cables are not included

In the box


Driver Tube Upgrade

Power Tube Upgrade

Rectifier Upgrade Tube


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