This is a portable. Compact. Lightweight self-contained amplifier Audio-Video Stereo System with a full Karaoke features & song recorder. The unit contains in itself a multi-player DVD player, satellite speakers, sub-woofer, main microphone and wireless microphone enclosed in a carry-all polyurethane casing. Figure Descriptions/ Legend A Satellite Speaker B Multi-Disk Player C Main Microphone D Volume Control Knobs E Power Switch F Audio/Video Input G Audio/Video Output H Wireless Sub-Microphone I Subwoofer