M-4 vs Onkyo M-504
The M-504's power @ 8ω is 165W against the M-4's 120W, its signal-to-noise 120 dB against 118 dB, its thd 0.003% against 0.005%, and its damping factor >100 against >200.
AI-generated product photo — not official manufacturer imagery.
M-4
YamahaAmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$400
Around — community and catalog average, updates slowly
About the M-4
The Yamaha M-4 is a highly regarded stereo power amplifier from the late 1970s and early 1980s. It is noted for its clear and natural sound quality, making it a favorite among audiophiles. The amplifier features a power output of 120 watts per channel into 8 ohms, with a frequency response of 1Hz to 100kHz and a total harmonic distortion of 0.005%. It includes gold-plated RCA inputs and speaker outputs, enhancing signal integrity. The M-4 also features a damping factor of 200 at 8 ohms, ensuring strong control over speaker loads.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 120W @ 8Ω
- Damping Factor
- >200
Analog Output
Analog signal output specifications
- THD
- 0.005%
- SNR
- 118 dB
- Output Voltage
- 1.0V RMS
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 435 × 145.5 × 374.5 mm (W × H × D)
- Weight
- 18.5 kg (41 lbs)
Key Specifications
Power: 120W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions