McIntosh MA-230 integrated stereo amplifier

Year of manufacture:

1963 - 1966

Manufactured by:

McIntosh Laboratory Inc, 2 Chambers Street Binghamton, NY

Price when new (in the USA):

$349.00

Description:

Integrated amplifier

Mono/stereo:

Stereo

Power output:

30 watts per channel continuous

Harmonic distortion:

0.5%

Frequency response (+0-0.5dB):

20Hz - 20kHz

Power response:

35 - 20,000 c/s ±1dB

Hum and noise:

-75dB high level, -60dB low level

Damping factor:

10

Output impedance:

4, 8 or 16

Tone controls:

Dual concentric treble and bass, +18dB to -18dB

Input sensitivities:

high level: 0.25V at 250k

, phono: 1.5mV at 47k

, tape head: 1.5mV at 1 meg

Tape output:

0.25V into 25k

Line output:

10V into 5k

Tubes:

4 x 7591, 2 x 12AU7, 1 x 12AX7

Dimensions:

5½"H, 16"W and 14½"D (140 x 406 x 368 mm)

Weight:

43 lbs (19.55 kg)

Power supply:

105 - 125 V, 60 cycles AC