The Coaxial Digital Audio cable is the least common connection when it comes to modern audio transmission. It consists of a coaxial cable and two RCA connectors on either end. And yes, this is the same coaxial cable used on your satellite dish or TV antenna. Find out why this cable is not common nowadays in the video below.
The cable in the video is also a 75 Ohm cable. But don’t be tempted to try and use a standard RCA phono cable in place of a dedicated coaxial digital cable. They look similar and can work, but an analogue interconnect has different impedance values from a digital one (50 ohm versus 75 ohm), so won’t work as well. An entry-level cable like the QED Performance Coaxial will do a fine job for most.
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