The DKC-100 Pro and a Decode G-1. The DKC-100 is already firmly tape mounted into a rack for easy rack install. Vocopro DCK-100 -PRO Karaoke Digital Controller. DKC-100 changes the key of any music source up or down six steps digitally (in half-step increments), so the singer can sing at their desired range. Easily connects between the source and the amplifier or can be looped through any existing equipment. Digital key controller with single processing 16 bit control chip. +6/-6 Half tone key controller (half-steps). Multiplex function to cancel guide vocals on karaoke tapes or CDs. Dimensions: 16-3/8L x 2-1/2W. The VocoPro DECODE-G1 Karaoke CD Decoder is used to decode karaoke CD+G CDs with a standard DVD, CD or Laser Disc player with digital outputs. The decoder accepts up to 3 digital sources simultaneously and displays lyrics on standard monitors and video screens. The rear panel features switchable optical and coaxial inputs and three RCA video jacks connect up to three video monitors.