Maintenance has been completed, such as replacing 4 block capacitors and replacing 7 other capacitors! Comes with a bonnet The original MC275 is the pinnacle of Macintosh tube amplifiers. A powerful sound with a velvety luster and full of vitality. Please enjoy the rich Macintosh sound. The exterior has hood oxidation, rust, etc. (Satoshi Yonejima)
Maintenance information: 2026.2.22 maintained (internal fuse replacement · resistance 5W defect replacement · vacuum tube KT88 distortion and deterioration replacement 2 units (2026.2.14 4 supplies have arrived) · 4 35/80/15 μF deterioration exchanges · 6 oil capacitors 0.22 μF other deterioration replacement · 20 μF other deterioration replacement · 3 electrolytic capacitors 20 μF and other deterioration replacements · 2 thermistor deterioration replacements · 2 diodes added · SP terminal deterioration replacement 2 pieces, 1 W resistance deterioration replacement, 2 pieces, simple lettering treatment, vacuum tube socket and RCA jack caulking repair
*Other operation checks have been performed (measured at 66 to 91 W SP: 8 Ω at rated output AC 100 to 117 V)
Accessories: bonnet
Main specifications: 5W+75W (in stereo) 150W (when mono) vacuum tube/12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AT7 x 2 frequency band 16 Hz to 60 kHz input sensitivity 0.5 V input impedance 250 kΩ dimensions W311 x H203 x D438 mm weight 30.4 kg