he KA920 is the most powerful karaoke mixing amplifier in its class with up to 460 watts of power per channel. Up to six microphones can be used at one time, letting you and your friends sing karaoke like never before. The channel 1 to 4 Mic inputs have full 3-band EQ, echo effects and gain controls. Switch between up to four music and video sources at the touch of a button on the unit