What is the orange plug on my TV?
RCA connectors and cable are also commonly used to carry S/PDIF-formatted digital audio, with plugs colored orange to differentiate them from other typical connections.
Can I use a regular RCA cable for digital coaxial audio connection?
the bottom line is that nearly any old rca cable will work fine. try it out and see if it works consistently and you should be fine. i’ve used 100 ft runs of thin, unshielded, ultra cheapo RCA for digital coax and it worked fine.
Is digital audio cable same as RCA?
A Digital Coaxial connection uses a cable that has RCA-type connectors. This digital coaxial cable is different from the standard RCA cable in that it is designed to handle the wider frequency bandwidth of the digital audio bit stream.