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Technic details
Specifications
Type:
Monophonic Power Amplifier
Power Output:
60W continuous
Input Level:
Input 1 - 0.5V to 30V, with gain control
Input 2 - 2.5V (For use with McIntosh Audio Compensators and Pre-Amps)
Harmonic Distortion:
Less than 0.5% at 60W output or less, 20Hz to 20kHz
Frequency Range:
20Hz to 30kHz, ±0.1dB (At 60W output)
16Hz to 60kHz, ±0.5dB (At 60W output)
1Hz to 100kHz, ±1dB (At 60W output)
IM Distortion:
Less than 0.5% instantaneous peak power is below 120W
Impulse Distortion:
Negligible
Noise and Hum Level:
90dB or more below rated output
Damping Factor:
12 or better for 4, 8, and 16Ω output, 16 for 600Ω
Input Impedance:
0.5MΩ for 0.5V input
0.13MΩ for 2.5V input, 20Hz to 40kHz
Output Impedance:
4, 8, 16, 83 (70.7V) and 600Ω (600Ω is balanced to ground)
Phase Shift:
±8˚, 20Hz to 20kHz
[Tube Complement]
Rectifier:
2 x 5U4GB
Pre-Amp:
1 x 12AX7
Phase Inverter:
1 x 12AU7
Voltage Amp:
1 x 12BH7
Driver:
1 x 12AX7
Output:
2 x KT-88 / 6550
Auxiliary Equipment Connection:
Designed to power C-4, C-8 and other McIntosh pre-amplifiers
Finish:
Chrome and Black
Power Supply:
AC 117 / 125V, 50 / 60Hz
Power Consumption:
280W at 60W output
155W at zero signal output
Dimensions (W x H x D):
355.6 x 254 x 203.2mm
Weight:
20.87kg
Year:
1955
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