Digital Class D amplifier PD-1200 is a compact 1U designed powerful amplifier that integrated several inputs mixer, it output 300W x 2 at 8 ohm, 450W x 2 at 4 ohm, and max 800w at bridged mode. Built-in SD, USB and Bluetooth allows high quality sound playback in various audio format, including mp3, wav, ape, flac, etc.