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WA3 Headphone Amplifier

Woo Audio WA3 amplifier
Woo Audio WA3 amplifier

WA3 Headphone Amplifier

  • Limited time, FREE shipping worldwide

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Comments and Reviews



WA3 is a high-performance OTL (Output Transformerless) headphone amplifier ideal for high impedance audiophile headphones. It features an all-tube design with point-to-point wiring for a pure analog sound. It's compact size, affordable price, and impeccable build quality offers tremendous value for music lovers looking to build a headphone listening system.


  • Tubes: 6080 power x 1, 6922 driver x 2

  • Polytetrafluoroethylene (PTFE) tube sockets

  • Singled-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 1

  • 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: 6"(H), 5 ½"(W), 13"(D), 10 lbs.


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

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

  • WA3 headphone amplifier x 1

  • 6922 vacuum tubes x 2

  • 6080 vacuum tube x 1

*AC power cord and audio cables are not included

In the Box



Power Tube Upgrade

Driver Tube Upgrade