VocoPro KJ-6000 2 Channel, 4 Mic Input Mixer With Digital Key Control and Vocal Eliminator Professional karaoke vocal mixer can accommodate turntable, line audio (CD players) and video sources 4 microphone inputs, including one XLR and three 1/4-inch Digital Echo with Repeat and Delay controls for vocal enhancement Vocal Eliminator feature removes the vocals in the center of a mix Space-saving rack design takes up just 4 spaces