Maxcart 65 Watts MX PA Professional Amplifier with Digital Media Player Compatible with Radio, Bluetooth & Recording,USB Disk, SD Card Plug & Play FEATURES : USB Disk, SD Card plug and play, compatible with radio, Bluetooth & Recording (Long Press Pause) 3 Channels Microphone Inputs, 2 channels Aux Inputs, 1 Channel Line Output. 100V constant voltage output and 4O\ 8O\16O resistance output. With erase function, easy to insert emergency broadcast, with output short-circuit protection and alarm, overheating and saturation distortion warning. The Microphone independently control, high and low sound control. Specifications : MX A-65 Power Output: 80W Max 65W RMS at - 10% THD, 60W RMS at -5% THD Output Regulation.