Detailed Description  Features:  * Recommended For HomeCommercial Karaoke Or Various Karaoke Occasions Use * Infrared Remote Control * 200W+200W Maximum Power Output at 4ohms  * Innovative Digital Echo Processing  * 3 microphones Inputs for Usage  * Microphone Auto-gain Level Indicators  * Microphone Input Signal Attenuators  * Individual Microphone Volume/Bass/Midrange/Treble/Balance/Echo Level Adjust * Individual Echo Effect (Volume/Bass/Treble/Repeation/Delay Time) control * Individual Music Volume/Balance/Bass/Midrange/Treble Adjust * 9 Steps Digital Key Control  * A/B Iuput Selector from 2 Audio Sources * 2 Music Mode (Karaoke/Super Bass) Selection * Auto Video-In Switching * Overload and Short Circuit Protecting * Advanced Channel type Heating-blow System * Master Volume Automatic Reset Switch * Dual Voltage(AC110v/220v)For Select * Frequency Response: 25Hz-20KHz =88dB * T.H.D0.015% * Input SensitivityCircuit250mV; Mike15MV * Net Weight: 15Kgs * Dimensions: (WxHxD) 430x156x335mm  We offer various Karaoke amplifier, Karaoke speaker, Karaoke mixer, Karaoke microphone,and various karaoke products for karaoke system .We also offer various amplifier receiver with AM/FM for Home stereo system.Welcome OEM ODM cooperation.