McIntosh MC-60 mono power amplifier

Year of manufacture:

1955-1961

Manufactured by:

McIntosh Laboratory Inc, 2 Chambers Street Binghamton, NY

Price when new (in the USA):

$198.50 (1959)

Description:

power amplifier

Mono/stereo:

mono

Power output:

60 watts RMS

Harmonic distortion:

less than 0.3% at 60 watts

IM distortion:

less than 0.5%

Frequency response:

20Hz - 30kHz ±0.1dB at 60 watts output

Input impedance:

500k

for 0.5 volt input, 0.13m

for 2.5 volt input

Hum & noise:

90dB below rated output

Output impedance:

4, 8, 16 and 600

. (600

balanced to ground and center tapped. 4, 8 and 16

isolated from ground)

Damping factor:

12 for 4, 8 and 16

Tubes:

2 x 6550 output, 2 x 12AX7, 1 x 12AU7, 1 x 12BH7, 2 x 5U4 rectifiers

Dimensions:

8 in. x 10 in. x 14¼ in. (203 x 254 x 362 mm)

Weight:

46 lbs (20.9 kg)

Power consumption:

117-125 volts 50 - 60 c/s