TOSLINK or Optical Cable is a fiber optic connection system. Most commonly used with audio equipment (via a "digital optical" socket) where it carries a digital audio stream from devices such as CD DVD Blu-Ray players and modern video game consoles to an AV receiver such as surround sound system that can decode the stream of audio and output it through a set of loudspeakers.<br>Since TOSLINK uses fibre-optic cable it is free from distortion caused by electrical or magnetic interference that an electrical cable would incur.<br>The result is an audio signal that is purer as well as truer to the original recording. Gold plating is used on the connectors for its anti-corrosive properties.