Analysis of information sources in references of the Wikipedia article "S/PDIF" in English language version.
...connections such as S/PDIF do not have the bandwidth necessary to deliver uncompressed surround sound...
The components of a sound card are: [...] An SPDIF digital output (Sony Philips Digital Interface, also known as S/PDIF or S-PDIF or IEC 958 or IEC 60958 since 1998). This is an output line that sends digitised audio data to a digital amplifier using a coaxial cable with RCA connectors at the ends.
{{cite journal}}: Cite journal requires |journal= (help) AES Convention 121, paper 6948{{cite journal}}: Cite journal requires |journal= (help) AES Convention 121, paper 6948