DESC: This one unit is packed with features such as a nineteen step digital key controller, digital echo with repeat/delay, and two microphone inputs with their own separate volume control. Also added is a third D.J. microphone input for announcements, and three audio/two video inputs that will turn a DVD or laser disc player into a Karaoke machine. VocoPro's CDG-500RF is the wise investment to add to any home or club for quality Karaoke entertainment.