VocoPro DA-2000K Digital Key Control Echo Mixing System Karaoke Mixer. Professional Digital Echo with Separate Repeat and Delay Controls per Mic channel. 3 Microphone inputs w/ individual Volume controls and Echo On/Off Switches. Vocal Cancel and Vocal Partner features to delete/add guide vocals on Multiplex Karaoke Tapes and CD’s. Source/Left/Right Level Output Displays. CD+G and DVD input/output jacks.