The McIntosh MA6100 (1973-1980) was McIntosh's mid-power integrated of the 1970s: 70 W per channel at 8 ohms, all-discrete signal path, tone controls, headphone amp, phono stage with adjustable load. Distinct McIntosh blue meters and glass faceplate.
A serviced MA6100 in 2026 sells for EUR 1500-2400 depending on cosmetic grade.
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The most common failure is degraded electrolytic capacitors - any unserviced unit needs a recap (EUR 400-700 of tech labour). Glass faceplate scratches are hard to fix; prioritise cosmetics if you are paying premium.
Check meter bulbs - replacement bulbs are available but not original. Phono stage MM/MC switch can be intermittent and cleanable.