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AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$900
Around — community and catalog average, updates slowly
About the M-80
The Yamaha M-80 is a two-channel Natural Sound stereo power amplifier introduced in 1984. It is rated at 250 watts per channel into 8 ohms, with Auto Class A circuitry that operates in Class A at lower output levels and transitions to Class A/B as demand increases. Features include Zero Distortion Rule amplification, LED power-level meters, input-level controls, overload protection, and connections for up to three speaker pairs.
Specifications
Type: Stereo power amplifier
Rated output: 250 W per channel into 8 Ω (stereo), 20 Hz–20 kHz, 0.003% THD
Frequency response: 20 Hz–20 kHz
Total harmonic distortion: 0.003%
Damping factor: 250
Input sensitivity: 1.55 V
Signal-to-noise ratio: 127 dB
Dimensions (W × H × D): 435 × 165 × 425 mm
Weight: 23 kg
Features: Auto Class A circuitry; Zero Distortion Rule amplification; LED power-level meters; overload protection; three speaker-pair connections