The 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 or via remote control. Two A/V outputs are also provided for routing to monitors and other devices. An on-board 32/40-bit DSP provides reverb and echo effect for superior vocal enhancement and a +/- 8 step digital key controller changes the key of the music without changing the tempo. The KA920 can be rack mounted and is excellent for use by touring groups, on stage, in schools, resorts, large conference halls and parks.