Woo Audio Inc. WA3 Audio Amplifiers and Preamplifiers

Price: $495 Colored Black and Silver Preamp Option: $100 Purchase this option to add RCA line output. The preamp uses a 6922 as a driver to push a 6080 power output tube. *Includes 1 pair of drive tubes and 1 power tube. *Excludes AC power cord and RCA interconnect cables. *Shopping cart is only available to US buyers. International buyers please contact for shipping and payment instructions. User Manual (PDF) Technical Specifications: Headphone Impedance: 30-600 ohms Input Impedance: 100 kilohms Frequency Response: 8 Hz - 100 kHz - 3 dB Signal/Noise: 95 dB THD: =0.08% Preamp Gain: 10 Decibel Voltage: AC 110/220 Volts,50/60 Hz Dimensions: 6 (H),5 ½ (W),13 (D) Weight: 10 lbs Standard Features: Point-to-Point Wiring 6AS7/6080 PDF Power Tube Two 6922/6DJ8 PDF driver tubes,one RCA input,one preamp output,1/4 (6.3mm) stereo headphone jack,all-aluminum die-cast chassis,anodized all-aluminum volume knob and power switch button,80-watt specialty toroidal transformer,gold pin tube socket Gold Plate RCA Alpine Potentiometer and Power Switch Silver Plated Connecting Wire in Telfon Jacket Power Tube Upgrade: Sylvania 7236 NOS$60 Each of the best power tubes available for this amp. The 7236 greatly improved dynamics and soundstage. It has a very good speed,warm midrange,tight and deep bass. Purchased and shipped separately. Driver Tube Upgrade 1: Hand Pick Pairing Philips 6922 Jan $40 (Pack of 2) Low noise,smooth. Military grade,Joint Army-Navy (JAN) managed. Purchased and shipped separately. Driver Tube Upgrade 2: Hand-Selected Pairing Sylvania 7308 Jan $260 (Pack of 2) Ultra-low noise and low mic,deep,clean bass,excellent tremolo extension,and full-body midrange. Purchased and shipped separately.