Woo Audio WA234-MONO (2nd gen) Headphone / Speakers Amplifier (In Stereo Pair)

2025-10-16T11:24:34-04:00

Vendor: ABYSS Headphones
Type: Electronics
Price: 23999.00

Overview

The new WA234-MONO (2nd gen) is a SET (single-ended triode) mono-block amplifier for the ultimate headphone and loudspeaker listening. The name is derived from the three legendary power tubes 2A3, 300B, and 45. The architecturally sculpted aluminum chassis creates a stunning art form and eliminates unwanted mechanical vibration, ensuring sonic purity. This timeless masterpiece uses all-triode tubes to deliver a listening experience at home that resembles a live performance.

The 2nd generation has been meticulously re-engineered with an exhaustive redesign of the driver and output stage for improved output loading capacity and power to deliver an impressively wide dynamic range across the entire frequency band.

The popular 6SN7 tube driver works alongside our in-house developed STEP-UP Driver technology, delivering a pristine, low-loss signal gain with sufficient voltage for the output stage. Proven successful in the acclaimed WA24 20th Anniversary Edition amplifier, the result is an ultra-low noise-floor with a pitch dark background that brings out the finest details in the music. This newly designed driver unlocks hidden power that is linear and distortion-free, even at maximum power output. The WA234-MONO pairs well with a wide range of loudspeakers with authority because it offers a linear output throughout the entire volume control range.

The latest innovation in headphones is ribbon driver. WA234-MONO (2nd gen) introduces a direct-drive True Ribbon output that unleashes the full potential of ribbon headphones without the need for an interface. You’ll experience the full glory of ribbon headphones at their purest presentation.

Just as music brings us joy, using the WA234-MONO offers endless fun with its easy-to-use customization with our unique Switching Key system. You can tailor the amplifier’s output for your specific needs—whether it is headphones or for loudspeakers using the Output Switching Key (OSK). Additionally. The sound profile can also be tailored, whether you prefer the sound of 2A3, 300B, or 45 power tubes using the Tube Switching Key (TSK).

For example, if you’d like to listen to loudspeakers with a warm sound profile, simply install the 300B vacuum tube with the corresponding Tube Switching Key (TSK) and the Speaker Output Switching Key (OSK). Instantly transforming the WA234-MONO into a 300B speaker amplifier. Or switch to 2A3 vacuum tubes and the Cathode OSK to hear the delicate details and resolution of your music through any headphones in your collection, regardless of brand or driver technology. The combination of vacuum tubes and listening preference is fully customizable!

The new WA234-MONO (2nd Gen) is a masterpiece that transcends typical amplifier limitations through thoughtful engineering, unique features, and authentic music reproduction for both headphone and loudspeaker listening enjoyment.

SWITCHING KEY SYSTEM

Tube Switching Keys (TSK)

Tube switching key (TSK) allows the user to switch between different power output tubes (2A3, 300B, 45).

For 2A3 Power Output Tube

For 300B Power Output Tube

For 45 Power Output Tube

Output Switching Keys (OSK)

Output switching key (OSK) allows the user to switch between speaker and different headphone output modes.

Cathode Output LO-Z for High Sensitivity Headphone

Cathode Output HI-Z for High Sensitivity Headphone

Plate Output LO-Z for Low Sensitivity Headphones

Plate Output HI-Z for Low Sensitivity Headphones

Direct-drive system for Ribbon Headphones

For loudspeakers output (4 to 16 ohms)

Highlights

Updated to 2nd generation in Sept 2025

Monoblock design, Headphone / Speakers Amplifier (In Stereo Pair)

Tubes: 6SN7 driver x 1, 300B power x 1, 5U4G rectifier x 1 each amplifier

Compatible with 2A3 / 300B / 45 power tubes

Single-ended Triode, Class-A

Transformer-coupled, Point-to-Point wiring

Independent headphone and speaker circuity

Direct-drive for True-ribbon headphones

Compatible traditional headphones impedance 8–600 Ohms

Selectable Cathode or Plate or True-ribbon output with KEYS

Polytetrafluoroethylene (PTFE) tube sockets

Self-biasing with compatible tubes [chart]

Power output rating [chart]

Anodized aluminum chassis, available in Diamond Black or Platinum Silver

Dimensions without tubes: 10" (H) x 8.75" (W) x 13.25" (D), 60 lbs. / 254mm (H) x 222.25mm (W) x 336.55mm (D), 27.21 kg.

Voltage (100v–240v) factory configurable

Designed and assembled in New York, USA

Three-year limited warranty [learn more]

In the box

Quick start guide

WA234-MONO amplifier x 2 [left and right channel]

WA234-MONO KEYS system [full set] x 1

6SN7 vacuum tube x 2

300B vacuum tube x 2

5U4G (274B) rectifier tube x 2

[Traditional headphones] 1m, 4-pin XLR (female) to dual 3-pin XLR (male) cable x 1

[True Ribbon headphones] 1m, 4-pin XLR (male) to dual 3-pin XLR (male) cable x1

*AC power cord and audio cables are not included

Each amplifier is hand assembled for you and ships to your door in approximately 2-3 weeks. Recommended cables: JPS Labs Superconductor 4 or best Aluminata XLR interconnects and JPS Labs Kaptovator Lite or best Aluminata AC cables.

SPECIAL ORDER, YOUR CHARGE IS NON-CANCELABLE, PRODUCT IS NON-RETURNABLE. EXPECT 2-3 WEEKS FOR DELIVERY.