The PT570AU is a 5.1 channel home receiver with built-in AM/FM radio, two Â¼" mic inputs, USB/SD card inputs for digital music playback, and 350 watts of output power. Store up to 12 presets. Adjust the mic volume control, treble, and bass. Inputs for 3 stereo RCA appliances. 2 channel speaker output. VFD display shows station frequency. Short circuit, thermal, and overload protection keeps your equipment secure.