McIntosh MC30 Mono Block Pair – Sequential Serial Numbers, Recently Serviced!

Here we have a set of McIntosh MC30 Tube Mono Blocks. This pair features ultra rare sequential serial numbers and have been recently serviced by Bob Hovland. They have been completely re-tubed with only the best from our massive NOS tube collection.

Specs:

Type  Tube-based single-channel power amplifier

Power Supply  117 - 125 volts, 50/60 cycles

Power Consumption  135 watts at 30 watts output; 105 watts at zero signal output

Power Output  30 watts continuous

Input Level  .5 volts to 30 volts, with gain control (standard input and octal pin 5); 2.5 volts (octal pin 2)

Frequency Range  20 to 30,000 cycles ±.1 dB at 30 watts output,
15 to 50,000 cycles ±.5 dB at 30 watts output,
10 to 1000,000 cycles ±1 dB at 15 watts output

Harmonic Distortion  less than ⅓% if instantaneous peak power is below 60 watts between 20 and 20,000 Hz

Impulse Distortion  negligible

Noise and Hum Level  90 dB or more below rated output

Damping Factor  12 or better for 4, 8 and 16 Ω output, 16 for 600Ω

Input Impedance  0.5 meg for 0.5 volt input and 0.13 meg for 2.5 volt input. 20 cycles to 40 kc

Output Impedance  4, 8, 16 and 600 Ω (600Ω is balanced to ground)

Phase Shift  20 cycles 3°, 20,000 cycles 9°

Tube Complement  12AX7 (preamp),
12AU7 (phase inverter),
12BH7 (voltage amp),
12AX7 (driver),
2x 1614 (output),
5U4-GA (rectifier)

Aux (Octal)  Designed to power C-8 and other McIntosh Pre-Amplifiers

Size  13”W x 8”H x 8”D

Weight  30.5 lbs.

Located In Our Studio City Shop!

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