Power a full surround sound system with this 5.1 channel amplifier with HDMI selector inputs. Equipped with an AM/FM radio, front-panel USB, SD, and 2 quarter-inch (1/4") microphone inputs, and a VFD display for crystal clear information. It takes 4 HDMI inputs and has 1 HDMI output, so it also functions as an HDMI selector - perfect if you've got multiple hi-def appliances but only one HDMI port on your TV. Independent volume knobs for master volume and microphones. 4 ohm impedance on speaker outputs. Supports AC-3 and Pro Logic decoding.