Yamaha M-80 Natural Sound Stereo Power Amplifier 250W (1985)
Solid. Reliable. Accurate. That's what you get from the hard-hitting Yamaha M-80. A powerhouse from the mid‑1980s, the Yamaha M‑80 delivers an impressive 250 watts per channel into 8 ohms at only 0.003% THD, with even higher output into lower-impedance speakers. Perfect for high-performance systems, it drives demanding speakers effortlessly with tight control and clarity.
💡 Why It’s Worth Owning:
Ideal for audiophiles seeking clean, powerful amplification with the reliability of Yamaha’s Natural Sound series. Comparisons show clear, dopamine-inducing audio—akin to high-end gear without the boutique price.
CONDITION
SPENCERTIFIED- Fully certified by Spencer
Refurbished and SPENCERTIFIED
This Yamaha M‑80 has been professionally refurbished and is in excellent condition both functionally and cosmetically.
All internal components have been inspected and serviced, including cleaning of the circuit boards, relay contacts, and adjustment of bias and DC offset to factory spec. The amplifier delivers full, clean power across both channels and has been stress-tested to ensure stable operation, even under demanding loads.
Cosmetically, the unit is clean with only minor signs of use—light surface marks typical of its age but no dents, cracks, or major blemishes. All LEDs, meters, and switches function properly, and the original front panel looks sharp. This is a powerful, reliable amp ready to drive any serious stereo or home audio system.
Cosmetic Condition: Very Good.
Functional Condition: Works Like New.
📦 Professionally packed and shipped with care.
WHAT'S IN THE BOX?
- Yamaha M-80 Natural Sound Stereo Power Amplifier 250W
KEY FEATURES
- Powerful Output: 250 W × 2 into 8 Ω (stereo), with dynamic bursts up to 1,000 W into 2 Ω for subwoofers or heavy loads
- Natural-Sound Circuitry: Low distortion (0.003% THD), wide frequency response (20 Hz–20 kHz), and high damping factor (250) deliver precise, unfatiguing audio
- Load-flexible Design: Handles loads down to 2 Ω with stable performance—ideal for dynamic home theater or multi-speaker setups
- Build Quality & Cooling: Solid Japanese engineering with substantial heatsinking; though heavy (23 kg), it remains efficient and reliable
SPECIFICATIONS
- Power output: 250 watts per channel into 8Ω (stereo)
- Frequency response: 20Hz to 20kHz
- Total harmonic distortion: 0.003%
- Damping factor: 250
- Input sensitivity: 1.55V
- Signal to noise ratio: 127dB
DIMENSIONS
- 17.13" x 15.9" x 6.25" (Length x Width x Height)
- Weight: 50 lbs
MANUFACTURE DATE and PLACE
- MFD. 1985
- Made in Japan
