The RCA connector, sometimes called phono connector or cinch connector, is a type of electrical connector commonly used to carry audio and video signals (depending on type used) E.G.Triple RCA (Audo & Video) & Twin RCA (Audio Only).
The name "RCA" derives from the Radio Corporation of America, which introduced the design by the early 1940s for internal connection of the pickup to the chassis in home radio-phonograph consoles.
It was originally a low-cost, simple design, intended only for mating and disconnection when servicing the console. Refinement came with later designs, although they remained compatible.
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