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Year of manufacture: 1956-1962
Manufactured by: Marantz America, Inc. 1100 Maplewood Dr Itasca, IL 60143
Price when new (in the USA): $198
Description: power amplifier
Mono/stereo: mono
Power output: 40 Watts RMS (20 watts in triode operation)
Total harmonic distortion: less than 0.1% at mid frequencies, and less than 0.5% from 20 cps to 10Kcps
Intermodulation Distortion: less than 0.5% 60 Hz to12 KHz
Frequency response: within 0.1dB 20 Hz to 20 KHz at 40 watts. At ½ watt ±1dB from 2 cps to 50 Kcps
Hum and noise: 90dB below 40 watts
Input sensitivity: 0.7V RMS into 105K (high gain input) and 2.0V RMS 285K (pre-amp input)
Output impedance: 4, 8, 16
Damping factor: greater than 20 (variable damping factor optional extra)
Feedback: 23.5dB (20dB in triode operation)
Tubes: 2 x EL34 (6CA7), 1 x 12AX7/ECC83, 1 x 6CG7 and 2 x 6AU4-GTA half-wave rectifiers
Dimensions: 15" wide x 9½" high x 6½" deep (381 x 241 x 165 mm)
Weight: 47 lbs (21.4 kg)
Power supply: 105-125 VAC, 50-60 cycles