The Tefifon is a German-developed and manufactured audio playback format that utilizes cartridges loaded with an endlessly looped reel of plastic tape (much like the later 4-track and 8-track magnetic audio tape cartridges) with grooves embossed on it, similar to the ones on a phonograph record. The grooves were embossed in a helical fashion across the width of the tape, much similar to Dictaphone’s Dictabelt format, and are read with a stylus and amplified pickup in the player’s transport. A Tefifon cartridge can hold up to four hours of music, therefore, most releases for the format are usually compilations of popular hits or dance music, operas and operettas.
