VocoPro Karaoke System, 21.00 x 21.00 x 23.00 (JAMCUBE2) Four 1/4" Microphone/Instrument Inputs for Maximum Diversity. Built-in Multi-Format Player & USB Port/SD Card Reader Supports DVD, CD, CD+G, Mp3 & Photo CD Formats. Digital Key Control for Changing the Key of Any Disc & USB Port/SD Card Played in the Multi-Format Player. JAMCUBE 2: Includes one VHF Dual Mic Module and SD Recorder Module