Hisonic Dual Channel MA-3800K Karaoke Mixing Amplifier, 760W Dual channel 760 watts mixing amplifer, ideal for home karaoke 11-step digital key control, Voice cancellation function for Karaok ( Multiplex Tracks only) 3 microphone input with individual volume, echo, bass & balance control Remote control included 30-day money back guarantee & 1-year limited warranty