Yamaha P2250 Professional Stereo Power Amplifier 170WPC Japan

Yamaha P2250 Professional Stereo Power Amplifier 170WPC Japan

Professional-grade Yamaha power delivering 170 watts per channel — or a formidable 500 watts bridged mono — at a fraction of the cost of audiophile equivalents, made in Japan, level one serviced, in fair cosmetic condition and working superbly.

The Yamaha P2250 is one of the best-kept secrets in vintage amplification. Built for continuous professional duty rather than the consumer market, it delivers specifications that rival or surpass amplifiers costing many times the price: 0.007% THD, a 115 dB signal-to-noise ratio, and a damping factor of 110 place it firmly in the same technical league as high-end audiophile amplifiers from the likes of Mark Levinson or Krell — at a fraction of the asking price. Designed for commercial installation and live sound reinforcement, the P2250 was built to handle continuous duty in demanding environments, with a robust power supply, substantial heatsinking, and quality output devices that manage reactive, difficult speaker loads with composure that many consumer amplifiers simply cannot match. For the pragmatic, informed buyer who prioritises power, low distortion, and reliability, this is a genuinely outstanding amplifier at any price — and at this price, it is exceptional value.

Yamaha’s pro audio division has long been respected for engineering rigour, and the P2250 reflects that fully. The bridged mono mode producing 500 watts into 8 ohms makes it equally capable as a dedicated subwoofer amplifier or high-headroom bass channel, while the stereo 170 WPC mode drives even inefficient or low-impedance speakers with authority and control. We have had consistently strong results with this series and with pro-audio power amplifiers in general — customers regularly tell us they are surprised by how refined and musical a well-built professional amplifier sounds in a home listening context once it is properly set up.

This example has undergone our Level One service and testing which should ensure many more years of reliable performance ahead. The unit is in fair cosmetic condition — showing honest wear consistent with its professional history — but electrically and sonically it is performing exactly as it should.

Key Specifications:

Type: Professional stereo power amplifier

Power output: 170 watts per channel into 8 ohms (stereo, both channels driven)

Power output (bridged mono): 500 watts into 8 ohms

Total harmonic distortion: 0.007%

Frequency response: 10 Hz – 50 kHz (+0, -1 dB at 1W)

Signal-to-noise ratio: 115 dB

Damping factor: 110

Channel separation: >70 dB

Input sensitivity: 1.23V

Gain: 28.3 dB

Speaker load impedance: 4 ohms minimum (stereo); 8 ohms minimum (bridged mono)

Year of manufacture: 1985

Country of manufacture: Japan

Condition: Fair cosmetic condition, Level One serviced, fully tested and working

Dimensions: (Width x Height x Depth) 480 x 132 x 423 mm (18.9 x 5.2 x 16.7 inches)

Weight: 19 kg (41.9 lbs)

Made in Japan, this Yamaha P2250 offers professional-grade power, vanishingly low distortion, and a build quality engineered for decades of continuous duty — all at a price that makes it one of the most compelling value propositions in high-power amplification, regardless of budget.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence; asking $445.