Accuphase P-7500 Stereo Power Amplifier

Accuphase P-7500 Stereo Power Amplifier with 300 Watts into 8 Ohms

The P-7500 is Accuphase’s flagship model Class AB stereo power amplifier that provides supreme driving performance. The power amplification stage uses a 10-parallel push-pull power transistor architecture, providing a rated output power of 300 Watts into 8 Ohms that vastly exceeds that of conventional models. Boasting an impressive signal-to-noise ratio of 130 dB and a damping factor of 1,000, it can effortlessly drive massive speakers and create musical recreations overflowing with energy. The P-7500 brings out the best of any speaker, allowing you to enjoy never-before experienced soundscapes.

Ample Output Power

The 10-parallel push-pull power transistor output stage produces linear output power of 300 W into 8 Ohms or 600 W into 4 Ohms, and a whopping 900 W into 2 Ohms of maximum output power.

Ultra-Low Noise Performance

Ideal gain distribution and other sophisticated techniques improve noise level suppression by 11% over the previous model.

High Damping Factor

With a damping factor of 1,000, the speakers can be driven with full control over the counter-electromotive forces to get the most out of your speakers.

Balanced Remote Sensing

Balanced remote sensing improves damping factor by feeding back the GND at the same time as signal output from the speaker terminals.

MCS+ (Multiple Circuit Summing-up) Principle

By placing the voltage amplification stage in a two-parallel circuit layout, the MCS+ circuit theoretically reduces the noise floor by 30%.

Instrumentation Amplifier

With balanced circuits in the signal input section, the amplification stage is comprised entirely of an instrumentation amplifier principle that equalizes input impedance on the + and – sides, for excellent external noise suppression, and providing optimal circuitry for this high-end audio amplifier.

Ideal Gain Distribution

Noise level suppression has been dramatically improved by assigning a high gain (12.6×) in the signal input section with excellent noise figure results.

Current Feedback Amplification Topology

The current feedback amplification circuit offers excellent phase characteristics in the high-frequency range with almost no impact on the frequency response even when gain is switched, resulting in natural and dynamic driving of the speakers.

Three-Stage Darlington Configuration

The three-stage Darlington configuration that drives the final output stage by a two-stage drive circuit minimizes any negative influence on the output stage from the counter-electromotive forces of the speakers.

Our Review

The Accuphase P-7500 is one of those rare flagship amps that feels both effortlessly powerful and beautifully refined, bringing a sense of ease to the music even as it dishes out some seriously impressive numbers. Its 10-parallel push-pull transistor architecture delivers a rock-solid 300 Watts into 8 Ohms - with huge reserves up to 900 Watts into 2 Ohms - so it never breaks a sweat, even with demanding speakers. But what really stands out is how all the clever engineering layers come together: the ultra-low-noise MCS+ circuitry, balanced remote sensing, instrumentation-grade input stage and current-feedback topology all work in harmony to create a sound that’s clean, dynamic, and wonderfully controlled. With a damping factor of 1,000 keeping everything tight and responsive, the P-7500 lets your speakers show their absolute best, opening up soundscapes that feel spacious, energetic, and just that bit more alive.