DC24V input, isolated Power 12V output, 6A MP3 port, built-in TV key amplifier power, 4X45W 2 Audio & video input,1 Audio & video output,switch on the amplifier panel USB for Mobile phone charger 2 Microphone input (Front one wire microphone,back one wire microphone) Open the power of microphone,the video of music and the video will be cut AUX-1 Input connect Av1 Input,AUX-2 Input connect Av2 Input. 1.8kg.