The power supply delivers the energy your audio equipment uses for music playback. Accuphase’s Clean Power Supply components provide a power source with minimum noise and distortion by utilizing a groundbreaking waveform shaping technology that compares the power supply’s waveform to a reference waveform, then supplements insufficiencies and removes any excess misshaping. The results of waveform shaping are then observable in a new waveform display. The PS-550 delivers impressive improvements in audio quality, making it an essential supplement to fine audio equipment.