XLR Definition - What is XLR?

What does XLR stand for?

An XLR connector is a type of electrical connector primarily used in professional audio/visual and stage lighting equipment. XLR stands for "External Line Return". XLR connectors were invented as a means of passing large electrical currents cleanly, while providing a standardized connector for most types of audio devices, such as speakers, mixing boards, amplifiers, microphones, and other recording equipment.

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