S/PDIF
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Max Speed
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Max Resolution
—
Power Delivery
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Released
1983
Sony/Philips Digital Interface for consumer digital audio. Carries stereo PCM or compressed 5.1 surround (Dolby/DTS). Available over TOSLINK optical or coaxial RCA.
Capabilities
Data
✗
Video
✗
Audio
✓
Power
✗
Ethernet
✗
Future-Proof Analysis
Being replaced by HDMI eARC for surround sound. Still useful for connecting soundbars to older TVs.