How important is the power supply to audio equipment? After all, amplified audio is nothing more than modulated power from the wall that’s been rectified, filtered, and smoothed along the way. Bryston’s quest to make the perfect power supply has resulted in two models-the PS-3 and MPS-2. Each is an ideal DC power supply to attached equipment giving them smooth, clean, DC power to modulate with incoming audio. These are mandatory power supplies for some equipment we manufacture and are not intended for use with other gear.