Accuphase P-4500 Stereo Power Amplifier

The quest for the optimal power amplifier has just taken another giant leap forward. The Accuphase P-4500 stereo power amplifier features an instrumentation amplifier configuration realized with discrete semiconductors in the signal path, triple Darlington 4-parallel complementary push-pull architecture and many other technology advantages. The result is an impressive S/N ratio of 121 dB, rated output of 500 watts into 1 ohm (music signals), and a damping factor of 700. A newly developed output protection circuit can also detect any short-circuiting of the speaker terminals, for complete peace of mind. This power amplifier is the ultimate tool for immersive music enjoyment on the highest level.

Technical Specifications 

Power amplification stage with 4-parallel complementary push-pull configuration
Linear output characteristics (90 W / 8 ohms, 180 W / 4 ohms, 360 W / 2 ohms)
500 W output into ultra-low impedance load of 1 ohm (music signals)
Instrumentation amplifier principle
Current feedback topology
Balanced Remote Sensing
High damping factor of 700
Speaker output protection with short-circuit detection
Highly responsive large peak power meters
Support for bi-amping and bridged mode