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A Radio Corporation of America (RCA) connector is a type of electrical connector that is used to carry audio/video (A/V) signals. It is the oldest type of connector in use, dating back to the early 1940s. Although the design of the RCA connector has changed slightly, it is still compatible with the previous model. The connector comes with coaxial cables.
An RCA connector is also known as an A/V jack or phono connector.
The RCA connector is sometimes called phono connector because it was originally used for the internal connection of the pickup to the framework in home radio-phonograph consoles. It was originally a low-cost connector with a simple design that was used for connection and disconnection when servicing console equipment. The connector has two plugs: male and female. The male plug has a center pin surrounded by a band, whereas the female plug has a slightly smaller band surrounding a hole for the pin. Connection is established by simply pushing the plugs into the socket. These come in various colors, but the following colors, however, are the most commonly used: