• Country
• United States of America (USA)

• Manufacturer / Brand
• McIntosh Audio Company; Binghamton, NY

• Year
• 1963–1966

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 133146

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 7

• Valves / Tubes
• 12AX7 12AU7 12AU7 7591 7591 7591 7591

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 60 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: MA-230 - McIntosh Audio Company;

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 16 x 5.44 x 14.5 inch / 406 x 138 x 368 mm

• Notes
• Integrated Amp, stereo. Hybrid (solid state preamp and tube power amplifier). 30w/ch stereo, 60w mono. Response 20-20kHz (+0 -0.5dB). Distortion 0.5%. Noise and hum -75dB high level, -60dB low level . Output impedance 4, 8 and 16 ohms. Damping factor 10. Input sensitivity and impedance: high level 0.25V at 250k, phono 1.5mV at 47k, tape head 1.5mV at 1 meg. Tape output 0.25V into 25k. L+R output 10V into 5k. Dual concentric tone controls +18dB to -18dB. LF filter 50Hz at 12dB/oct. HF filter 5k at 12dB/oct.

• Net weight (2.2 lb = 1 kg)
• 43 lb 0 oz (43 lb) / 19.522 kg

• Price in first year of sale
• 349.00 $

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 87 models, 82 with images and 45 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McIntosh Audio Company; Binghamton, NY