Woo Audio Inc. Single-ended, OTL Headphone and pre amplifier WA3

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Single-ended, OTL Headphone and pre amplifier - WA3 - Woo Audio Inc.
Elmhurst, NY, USA
Single-ended, OTL Headphone and pre amplifier WA3
Price: $495 Color Black Silver Pre-amp option: $100 Purchase this option to add one RCA line output. The pre-amp out uses the 6922 as a driver pushing the 6080 power output tube. * 1 pair of drive tubes, and 1 power tubeare included. * AC Power cord and RCA interconnect cables are not included. * Shopping cart applies to the U.S. buyers only. International buyers please contact for shipping cost and payment instruction. Owner's Manual(PDF) Technical Specifications: Headphones impedance : 30-600 Ohms Input impedance: 100 Kilo-Ohms Frequency response: 8 Hz - 100 KHz -3dB Signal/Noise: 95 dB THD: = 0.08% Pre-amp Gain: 10 dB Voltage: AC 110/220V, 50/60 Hz External dimension: 6"(H), 5½"(W), 13"(D) Weight: 10 lbs Standard Features: Point-to-Point wiring One 6AS7 / 6080 [PDF] power tube Two 6922 / 6DJ8 [PDF] drive tubes One RCA input One pre-amplifier output 1/4" (6.3mm) stereo headphone jack Full aluminum die-cast chassis, anodized finish Whole aluminum volume knob and power switch button 80 watts specially made toroidal transformer Gold-pin tube sockets Gold-plate RCA Alps potentiometer and power switch Silver-plated hook-up wires in Telfon jacket Power tubes upgrade: Sylvania 7236 NOS $60 each One of the best power tubes available for this amp. The 7236 vastly improves dynamic and soundstage. It has a very good speed, warm mid range, tight and deep bass. Buy and ship separately. Driver tubes upgrade 1: Hand-pick matched pair Philips 6922 JAN $40 (2 pcs) Low noise, smooth. Military grade, Joint Army Navy (JAN) tube. Buy and ship separately. Driver tubes upgrade 2: Hand-pick matched pair Sylvania 7308 JAN $260 (2 pcs) Ultra low noise and low microphonic, deep, clean bass, excellent extension on tremble, full body mid range. Buy and ship separately.
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Technical Specifications

  Woo Audio Inc.
Product Category Audio Amplifiers and Preamplifiers
Product Number WA3
Product Name Single-ended, OTL Headphone and pre amplifier
Type Audio Amplifier
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