ITEM NAME:100W High Power TDA7293 Digital Audio Amplifier AMP Board Mono Single Channel ME Features: Must use 3 lines transformer, DC and battery is not support! Must with IC radiator 100% brand new and high quality 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:4-8Ω,50-200W,3-10'' bookshelf speaker and floor type sound box Package includes: 1pc xTDA7293 Digital Audio Amplifier.1pc xTDA7293 Digital Audio Amplifier. Must with IC radiator. Channel type:1.0 mono. Switch machine mute,over heat protection, short circuit protection. Power input: Double AC 12-32V,100W. Compatible speaker:4-8Ω,50-200W,3-10" bookshelf speaker and floor type sound box.