McIntosh MA5100 (1966–1972)
A solid-state integrated amplifier produced by McIntosh during the late 1960s and early 1970s.
Overview
The McIntosh MA5100 is a 2-channel solid-state integrated amplifier made by McIntosh, a company known for high-fidelity audio equipment. It was manufactured from 1966 to 1972 and delivers 45 watts per channel into 8 ohms. The unit combines both preamplifier and power amplifier functions in a single chassis, offering a compact solution for stereo audio systems of its era.
Specifications
| Power output | 2 x 45W |
| Dimensions | 403 x 138 x 368mm / 16 x 5-7/16 x 14-1/2" |
| Weight | 11.3kg / 25lb |
Context
The MA5100 was produced during a period of transition in audio technology, as solid-state designs began to replace tube-based amplifiers in high-performance systems. Its six-year production run suggests steady demand and reliable performance in home audio setups.
Market
The original MSRP was $449. While current market values vary—with asking prices around $1400 and sale prices from $999.99—and common maintenance often involves replacing electrolytic capacitors or using restoration recap kits, the amplifier is recognized among vintage audio enthusiasts and occasionally appears in restoration projects.
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