Digital Audio
An optical interface transmits digital audio using light through a fibre-optic cable, offering electrical isolation and immunity to interference.
Optical audio interfaces use light signals rather than electrical currents to transmit digital audio data between devices. The most common format is TOSLINK, which carries SPDIF or ADAT signals via a plastic optical fibre.
The key advantage of optical transmission is complete electrical isolation between connected equipment, eliminating ground loops and electromagnetic interference. Optical interfaces are widely used in both consumer and professional audio systems, especially where low noise and safety isolation are essential.
In studio setups, optical connections are frequently used for multi-channel ADAT transfers or stereo SPDIF links between converters, interfaces, and digital processors.
