Final Scratch is a DJ tool created by the Dutch company N2IT with input from Richie Hawtin (aka Plastikman) and John Acquaviva that allows manipulation and playback of digital audio sources using traditional vinyl and turntables. It seeks to cross the divide between the versatility of digital audio and the tactile control of vinyl turntablism.
Final Scratch uses special vinyl records pressed with a digital timecode, which are then played on normal turntables. The timecode signal is interpreted by a computer, connected to the turntables through an interface called the ScratchAmp. The signal represents where the stylus is on the record, in which direction it is traveling, and at what speed. This information is interpreted by the computer and used to play back a digital audio file which has been 'mapped' to the turntable. In practical terms, this means that any audio file can be manipulated as though it were pressed on vinyl.