ITEM NAME:100W Audio Amp Amplifier Sound Board Single Channel Stereo12-32V Description: Low distortion, low noise, high pressurization Switch machine mute,over heat protection, short circuit protection Output power:100W Power input:Double AC 12-32V,100W Channel type:1.0 mono Frequency range:20Hz-20KHz Compatible speaker:4-8&;,50-200W,3-10'' bookshelf speaker and floor type sound box Specification: Material:PVC Size:60*50*23mm Package Includes: 1x Audio Amplifier Board SKU: ALU0016445551007236.1x Audio Amplifier Board. Switch machine mute,over heat protection, short circuit protection. Power input:Double AC 12-32V,100W. Channel type:1.0 mono. Low distortion, low noise, high pressurization. Compatible speaker:4-8&;,50-200W,3-10" bookshelf speaker and floor type sound box.