A plug and socket for coaxial cable. RCA connectors are used for analog audio signals (see analog audio). They are also used for digital audio (see S/PDIF) and analog video (see composite video).
For instance, the 4-Feet Digital Audio Coaxial Cable by Amazon, which is a high-purity coaxial cable, connects RCA-compatible digital audio components with aluminum braiding and dual foil shielding ...