The Yamaha M-4 (introduced in 1979-1980) is a critically acclaimed vintage solid-state stereo power amplifier from Yamaha’s peak "Natural Sound" era. The M-4 is revered for its sophisticated DC architecture, exceptionally low distortion, and striking industrial design featuring distinct, colored push-button status indicators.
120 Watts per channel into 8Ω (Stereo); 170 Watts per channel into 4Ω.
Repair:
Repair Channels
Added LED's