7.1 Channel Amplifier - 2 MIC Input, Treble and Bass of MIC Adjustable, Independent MIC Volume Control - Power Output: 300W for L,R Channel (4 Ohm) 50W for Center, Surround L and Surround R(4 Ohm) ,side Surround L and side Surround R(4 Ohm) * 4 HDMI Input Port and 1 HDMI Output Port for HDMI Receiver and HDMI Switcher - Over Current Protection, Short Circuit Protection And Over Voltage Protection * One Key Switch Function Between HDMI Receiver and HDMI Switcher - 12 Preset Radio Station - Input Selector: 4 in 1 out HDMI Selector, 3 Stereo RCA Selector, 1AM/FM Radio, 1 USB/SD, 2 Microphone Input * Built-In AM/FM Radio - Full Remote Control - Output: 7 Channel Speaker Output Terminal for L, R, Center, SL, SR,RR,RL And 1 line Out for Subwoofer * Built-In USB and SD Audio - VFD Display