The Dj-Tech iDance Zero is the affordable iPod mixing console that provides full control of music with real–time scratching (via jog wheel), a stunning DSP section for the color of music and a direct link to connect iPod to computer. Key Pitch insures that DJs can easily change the key of the music which is nice for Karaoke as well. The iDance Zero features a fresh and innovative new iPod docking system that allows users to play and mix songs simultaneously from your iPod or/and any other sources like another iPod connected directly to the mixer or a CD Player. All these operations without the need of a computer. iDance Zero offers as well Twin USB Connectivity: 1/ connect iDance Zero to computer for Slave mode then iPod will communicate with computer directly or 2/connect iDance Zero to the computer and record directly with the freeware which is included audacity for PC and Mac and Magix for PC. In addition to the Twin USB connectivity, the iDJ2 comes complete with line inputs for audio sources including a microphone, CD players and turntables.