Woo Audio 234 Mono Amplifier Black

WA-234 MONO


The World’s First
Mono-block Headphone and Speaker Amplifier


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WA-234 MONO


The World’s First
Mono-block Headphone and Speaker Amplifier


Down Arrow
Woo Audio 234 Mono Amplifier Black

The result of inspired design and Woo Audio's renowned electronic expertise

This innovative monoblock amplifier not only supports both speaker and headphone output modes, but also offers the audiophile a choice of power tubes.

WA-234 Mono Amplifier Technical Drawing
6"
8.5"
WA-234 Mono Amplifier Technical Drawing
9.5"
WA-234 Mono Amplifier Key Technical Drawing
39mm
WA-234 Mono Amplifier Key Technical Drawing

top quality Teflon is used for the best isolation

gold plated oxygen free cooper

aluminum milled

details

  • Cursive aluminum casing with CNC machining
  • All triode drive, no semi-conductors.
  • Discrete mono-block, Single-ended, Class-A
  • Output transformer coupled, EI96 Permalloy core

details

  • Different internal circuits turn on and off to adapt different power tubes and output requirements.
  • Swap "Tube Switching Key" (TSK) when changing power tubes.
  • Change "Output Switching Key" (OSK) for different headphones and speakers output.
Woo Audio 234 Mono Black Amplifer w/ Keys

increase your options

Whereas a typical tube amplifier allows you to use only one type of power tube (or a substitute with a similar rating), the 234 MONO increases your options in an elegant way. A tube switching key (TSK) allows the amplifier to accept either 2A3, 300B, or 45 power tubes, so you can instantly switch your tube to suit your music or your mood.

Similarly, an output switching key (OSK) allows the listener to switch between speaker and headphone output modes, making it possible to enjoy a piece of music through headphones, then immediately share it with friends through speakers.


To make the 234 MONO even more versatile, Woo Audio created OSKs for cathode and plate outputs for high and low-impedance headphones.

WA-234 Mono Amplifier and Key Specs

have the best
of both worlds

The 234 MONO is a discrete mono block, Class A amplifier with all triode drive. No semi-conductors are used anywhere in the circuit. With the addition of all the listening options, you have the best of all worlds: an audiophile headphone amp and speaker amp in one. What’s more, you can then switch from a 2A3 to a 300B or a 45 tube at any given moment. You are sure to find combinations that will surprise and delight you.

Power Rankings
tube switching key
output switching key
WA-234 Mono Amplifier Key
Woo Audio 2a3 Power Tube

2a3

power tube

direct replacement for RCA 2A3 compatible tubes

Woo Audio 300B Power Tube

300B

power tube

direct replacement for Western Electric 300B compatible tubes

Woo Audio 45 Power Tube

45

power tube

direct replacement for RCA 45 compatible tubes

Woo Audio hi-z plate

plate, hi-z

headphone output

ideal matching for planar magnetic or any low efficient headphones

Woo Audio lo-z plate

plate, lo-z

headphone output

ideal matching for planar dynamic or any low efficient headphones

Woo Audio hi-z Cathode

cathode, hi-z

headphone output

supreme audio quality for high impedance and/or low sensitive headphones

Woo Audio lo-z cathode

cathode, lo-z

headphone output

supreme audio quality for low impedance and/or high sensitive headphones

Woo Audio Speaker Output

Speaker

output

best matching for high efficient speakers, and most horn or full-ranged speakers

Woo Audio WA-234 Mono Amplifiers

ingenuity equaled by elegance

The ingenuity of this cutting-edge product is equaled by the elegance of its design. Twin units comprising smooth layers of aluminum and featuring voluptuous curves, are crowned by tubes. With its unparalleled versatility and stylish good looks, how can the audiophile or music lover fail to be seduced by what must be the ultimate sound experience?

"The extraordinary levels of fit and finish of the curvy, machined-aluminum chassis are on par with the world's very best electronics."

- Steve Guttenberg, CNET

"The Woo Audio 234 Monobloc is like an original Ferrari Dino or a Lambo Miura — a simple, elegant, and undeniable classic."

- Chris Sommovigo, The High Fidelity Report

WA-234 MONO

Mono-block Headphone &
Speaker Amplifier

WA-234 Mono Amplifier Buy Now WA-234 Mono Amplifier Buy Now