Overview

Originally introduced in 2009, WA22 has been an audiophile favorite. New for 2018 is improved sonic performance and preamplifier feature for use with a Hi-Fi system. WA22 (2nd gen) is an all-tube design, fully balanced headphone amplifier and preamplifier. The advantage of a fully balanced system is improved channel separation, more precise soundstage, and imaging. Perfectly suited for the headphone enthusiast and experienced audiophiles seeking flexibility and purest sound.

Highlights

Updated to 2nd generation in March 2018
Tubes: 6SN7 driver x 2, 6080 power x 2, 5U4G rectifier x 1
Polytetrafluoroethylene (PTFE) tube sockets
ALPS RK27 4-channel balanced smooth potentiometer
Fully-balanced design, Class-A
Power output: up to 1.5 watts per channel @32 Ohms [recommended for power demanding headphones]
Transformer-coupled, Point-to-Point wiring, Pseudo-dual power supply
Phase Splitter for use with unbalanced components
HI / LO impedance setting
XLR input x 1, RCA input x 1
Dual 3-pin XLR (left and right channel), 4-pin XLR and 1/4" (6.3mm) stereo headphone outputs
XLR balanced PREAMP output (<50 ohms)
Anodized aluminum chassis, available in black or silver
Self-biasing with compatible tubes [chart]
Dimensions: 7"(H), 12"(W), 10½"(D) amplifier 25 lbs.
Designed and assembled in New York, USA
Three-year limited warranty

In the box

WA22 (2nd gen) headphone amplifier/preamplifier x 1
6080 vacuum tube x 2
6SN7 vacuum tube x 2
5U4G (5U3C) rectifier tube x 1
Quick start guide

*AC power cord and audio cables are not included

Specifications

Colors: Black, Silver

Voltage: AC 110/220 - 240V, 50/60 Hz, Switchable

Power Output: 1500 MW @32 Ω, 1500 MW @60 Ω, 1600 MW @120 Ω, 1100 MW @300 Ω, 700 MW @600 Ω (With 7236 Tube)

Frequency Response: 8 Hz - 50 kHz, -3 dB

Impedance: 100 kΩ

Signal/Noise: 92 dB

THD: <= 0.3%

Woo Audio WA22 (2nd gen) Balanced Amp and Preamp