A videotape recorder, usually 1″ format, on which a mixed sound track with all DME stems can be re-recorded in sync with the edited video master. Because of its special purpose, a layback machine should have less flutter and higher quality audio heads and electronics than on standard 1″ video decks. Some layback machines designed especially for that purpose have no video reproduction capability at all. They merely read time code and do an extremely high-quality job of recording audio, and nothing else. The layback process is also called re-laying. See layback, layoff.