The Digital Audio Extender allows one (1) source of digital audio signal: coax (S/PDIF) or optic (TOSLINK) to be connected to a receiver: coax or optic to up to 500 ft. (150m) in a point-to-point configuration. The Extender supports most standards to transmit two channels of uncompressed lossless PCM audio or compressed 5.1/7.1 surround sound, such as Dolby Digital Plus or DTS-HD High Resolution Audio (multichannel digital audio Dolby Digital 5.1, DTS, and Dolby True HD).