The Yamaha M-4 is a vintage (1978–1983) DC stereo power amplifier renowned for its "Natural Sound" signature, delivering 120 watts per channel into
with a total harmonic distortion (THD) of 0.005%. It features parallel push-pull circuitry, a high damping factor of 200, and a wide frequency response of 1Hz to 100kHz.
Key Specifications (Yamaha M-4 Amplifier):
Power Output: 120 watts per channel into (stereo).
Frequency Response: 1Hz to 100kHz.
Total Harmonic Distortion (THD): 0.005%.
Damping Factor: 200.
Signal to Noise Ratio: 118dB.
Input Sensitivity: 1V.
Speaker Load Impedance:
4 ohm to 8 ohm.
Dimensions: 435 x 145.5 x 374.5mm.
Weight: 18.5kg.