Heathkit W-6M 70-Watt Amplifier Power Output: 70 watts Frequency Response at 1 watt: ± 1 db from 5 to 80,000 KC with controlled rolloff above 100 KC Harmonic Distortion at 70 watts: below 2%, 20 to 20,000 CPS Intermodulation Distortion at 70 watts: Below 1%, 60 and 6,000 cps Hum and Noise Level: 88 db below full output Damping Factor: variable, 0.5 to -10 Input voltage for 70 watts Output: 1 volt Tube complement: 1-12AU7 1-12AX7 1-12BH7 2-6550 Output Transformer: Peerless—special design Output taps at 6, 8 and 16 ohms, and 70 volts Dimensions: 11-7/8" d x 9-1/16" h x 14-¼" w Weight: 48 lbs