What are RCA Connectors?

The RCA connector is used in several audio applications. S/PDIF (Sony®/Philips Digital Interface) is the "red book" standard for digital audio signal transfer. A S/PDIF coaxial cable can carry linear PCM or multi-channel Dolby® AC-3/DTS® digital content. For dual channel stereo audio, two RCA connectors deliver the analog composite audio signal to the left and right channels of audio. In home theater, RCA is used as a powered subwoofer connection. In pro-audio applications, as part of an XLR to RCA cable, it can connect unbalanced sources to balanced XLR inputs for tape decks, CD/DVD players to mixing consoles and amplifiers, and can connect balanced line outputs from mixing consoles to unbalanced line inputs for recorders and amplifiers.

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