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Year of manufacture: 1965
Manufactured by: Harvard Electronics Co., 693 Broadway, New York
Price when new: $288
Description: OTL power amplifier
Mono/stereo: stereo
Power output: 50 watts RMS per channel into 16 ohms
Harmonic distortion: less than 0.2% for any audio frequency at 50 watts
IM distortion: under 0.3% up to 29 watts (8 load); under 0.3% up to 46 watts (16 load)
Signal to noise ratio: better than 90dB below 50 watts
Frequency response: +0, -0.5dB: 5 to 90,000 cps, -3dB at 8 cps and 115 Kcps
Power bandwidth (for constant 0.5% THD): 15 cps to 19 Kcps
Input sensitivity: 1.1 volt
Damping factor: 200
Tubes: 6HJ5 x 4; 6EJ7 x 2; 6FS5 x 2; 6DR7 x 2; 6EM7 x 1 (valves differed from unit to unit)
Dimensions: 17 in. x 10¼ in. x 7½ in (432 x 260 x 191mm)