
Description
Woo Audio's WA234-MONO (2nd gen) is a single-ended triode mono-block amplifier for the ultimate headphone and loudspeaker listening. It is a masterpiece that transcends typical amplifier limitations through thoughtful engineering, unique features, and authentic music reproduction for both headphone and loudspeaker listening enjoyment. 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 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.
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.
Specifications:
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Updated to 2nd generation in Sept 2025
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Monoblock design, Headphone / Speakers Amplifier (In Stereo Pair)
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Tubes: 6SN7 driver x 1, 300B power x 1, 5U4G rectifier x 1 each amplifier
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Compatible with 2A3 / 300B / 45 power tubes
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Single-ended Triode, Class-A
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Transformer-coupled, Point-to-Point wiring
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Independent headphone and speaker circuity
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Direct-drive for True-ribbon headphones
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Compatible traditional headphones impedance 8–600 Ohms
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Selectable Cathode or Plate or True-ribbon output with KEYS
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Polytetrafluoroethylene (PTFE) tube sockets
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Self-biasing with compatible tubes
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Power output rating
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Anodized aluminum chassis, available in Diamond Black or Platinum Silver
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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.
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Voltage (100v–240v) factory configurable
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Designed and assembled in New York, USA
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Three-year limited warranty