What is Digital Coaxial Audio? How to connect?

UGreen Alliance AV132 Applies TV Coaxial Audio Cable To Connect Power Amplifier SPDIF Line 3.5 RCA Lotus - AliExpress

Digital to Analog Audio Converter

C2G Legrand Velocity S/PDIF Cable, Blue Digital Audio Coax Cable, 6 Foot Digital Audio Cable to Use As Home Theater Coaxial Cable, 1 Count, C2G 29115 : Electronics

How To Connect An Old Receiver To A New TV

Rapallo 1.8m Coaxial Audio/Video RCA to RCA Cable – Rapallo

FAQ - What's The Difference Between Digital Coax and Digital Optical Audio Cables

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Coaxial vs optical vs HDMI: which is the best audio connection to use?

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Coaxial Digital Audio: What You Need to Know