Quad Stereo Amplifier with 4 independent stereo zone outputs. It has a mixer section for 2 microphones and two stereo audio sources. An inbuilt media player section offers playback of mp3 audio tracks from a USB drive or SD card, it also has a Bluetooth receiver and FM radio tuner. A rotary switch selects between either 2 rear stereo inputs, the front 3.5mm stereo socket or the built-in media player. Speaker connections on the rear panel are via 4mm binding posts, which can deliver 200 Watts per channel.