For connecting two devices with optical inputsoutputs in odt toslink standard for digital audio transmissiondigital optic fibre connections have the advantage that they can not be distorted by electromagnetic influences thus it is possible to implement low cable diameters even with longer cables the optical audio cable also decouples the audio transmitterreceiver and the audio receiveramplifier and prevents the occurring of humming not only 2 audio channels can be transferred via a di