WooAudio WA22 (2nd Gen) Fully Balanced Headphone Tube Amplifier

Samma3a Rating:
88% of 100

Two - Three Weeks Delivery time

The Woo-Audio WA22 Fully Balanced Headphone Amplifier, with a Balanced design from input to output, and Class-A, All Tube Drive, and an Output Transformer Coupled.

This marvellous amplifier provides an unmatched Realistic, incredible detailed and tonally balanced sound to give the ultimate musical experience to listeners.

WA22  is hand crafted in the US, and comes in two color options Silver and Black, for your selection please check the drop dow menu on the right side.

For tubes upgrade please visit Woo-Audio.com and send us an email to sales@samma3a to customize your amp

  • Point-to-Point wiring
  • All tubes. No semi-conductors in the entire circuitry
  • High and low impedance switch
  • Smooth balanced attenuator
  • Two 3-pin balanced headphone output
  • One 4-pin balanced headphone output
  • Hand crafted in the US 
Read More

Customer Also Viewed

Samma3a Review

Not Available

Technical Specification

  • Type: Balanced Tube Headphone Amplifier
  • Voltage: AC 110/220V, 50/60 Hz
  • Power output: 1500mw @32 ohms, 700mw @600 ohms
  • Frequency Response:  8 Hz — 50 kHz 
  • Headphones impedance : 8—600 Ω
  • Signal/Noise: 92 dB
  • THD: <= 0.3%
  • Power tubes : 6080
  • Drive tubes : 6SN7
  • Rectifier tubes: 5U4G
  • Inputs: One RCA inputs / One XLR input
  • Outputs: One 4 pin XLR / Two 3-pin balanced headphone/ /Single ended 6.4mm 
  • Weight: 11.5 Kg
  • Warranty: 1 year

What Is In The Box

  • WA22
  • Quick Start Guide
  • 2 pcs 6080 Vacuum Tube
  • 2 pcs 6SN7 Vacuum Tube
  • 1 pcs 5U4G Vacuum Tube


No Videos Available

Manufacture Description


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.



  • Updated to 2nd generation in March 2018

  • Tubes: 6SN7 driver x 2, 6080 power x 2, 5U4G rectifier x 1

  • Polytetrafluoroethylene (PTFE) tube sockets

  • Fully-balanced design, Class-A

  • 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)

  • ALPS smooth potentiometer

  • Anodized aluminum chassis, available in black or silver

  • Self-biasing with compatible tubes [chart]

  • Global voltage (100v–220v) without converter

  • Dimensions: 7"(H), 12"(W), 10½"(D) amplifier 25 lbs.

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

Questions & Answers

Search Q/A
Sort by
Expand All +
Write Your Own Review
You're reviewing:WooAudio WA22 (2nd Gen) Fully Balanced Headphone Tube Amplifier
Your Rating