Professional Digital Echo with Separate Repeat and Delay Controls for. The thin-profile DA-1000 Pro can be rack-mounted, and it features controls for digital echo, delay and repeat as well as vocal cancel and partner functions. Other features include 3 microphone inputs, 2 extra A/V inputs, and 3 extra video outputs. Key Features and Specifications Voice Cancel feature is used to cancel out the vocal layer on a 2-channel multiplexed CD+G, VCD or cassette. Voice Partner feature provides added voice activation that acts like a vocal auto-pilot. The vocal layer will be removed as long as you are singing into the microphone. When you stop singing into the microphone, the vocal layer will automatically be added back into the music. 2 sets of A/V input/output jacks Professional digital echo with separate repeat and delay controls per mic channel 3 Microphone inputs with individual volume controls and echo on/off Switches Music master/bass/treble controls Mic master/bass/treble controls Source/left/right level output displays CDG and DVD input/output jacks 19-inch rack mountable (mounting brackets included) Dimensions: 19 x 6 x 2.5 inches. Professional rack mountable digital karaoke mixer. Great choice for use in bars, churches, schools, and clubs as well as in-home systems. Professional digital echo with separate repeat and delay controls per mic channel. 3 microphone inputs with individual volume controls and echo on/off switches. Included mounting brackets for rack mounting.