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Year of manufacture: 1961-1970
Manufactured by: McIntosh Laboratory Inc, 2 Chambers Street Binghamton, NY
Price when new (in the US): $444.00
Description: Power amplifier
Mono/stereo: Stereo
Power output: 75 watts RMS, 150 watts mono
Total harmonic distortion: 0.5%
Frequency response: 16 c/s - 40 Kc/s (+0 -0.1dB)
Loudspeaker impedances: 4, 8, 16, 67 and 600. (600 center tap internally grounded) 2, 4, 8, 16 and 32 in mono
Hum and noise: -90dB
Input sensitivity: 0.5V (in mono or twin amp); 2.0V in stereo
Input impedance: 250K, plus approximately 5 mfd
Output voltages: 25V (isolated), 70.7V (one side grounded) and 230V (center tap grounded)
Tubes: 4 x KT88/6550 output, 12AX7, 2 x 12AU7, 2 x 12AZ7, 2 x 12BH7. Solid state rectifier bridge
Dimensions: 8" (H) x 12¼" (W) x 17¼" (D) (203 x 311 x 438 mm)
Weight: 76 lbs (34.5 kg)
Power supply: 117 or 125V