Woo Audio - WA2 Headphone Amplifier (OTL Design)

Overview Handcrafted since 2004, the critically acclaimed WA2 is a high performance OTL (Output Transformerless) headphone amplifier. WA2 is a Class-A, all-tube design, single-ended triode (SET) with point-to-point wiring to achieve the most analog sound. Music lovers with high impedance headphones (above 100 Ohms) would find WA2 to be the ideal pairing for their high-end headphones. Tubes: 6080 power x 2, 6922 driver x 2, 6CA4 rectifier x 2 Polytetrafluoroethylene (PTFE) tube sockets Single-ended Triode, Class-A OTL (output transformerless), Point-to-Point wiring Individual filter choke and rectifier per channel Pseudo-dual power supply RCA input x 4 1/4" (6.3mm) stereo headphone output ALPS potentiometer and power switch Anodized aluminum chassis, available in black or silver Self-biasing with compatible tubes [chart] Global voltage (100v–220v) without converter Dimensions: 5½"(H), 13"(W), 9"(D), 17 lbs. Designed and assembled in New York, USA Three-year limited warranty [learn more]