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What is XLR connector ?
Cables that carry balanced audio feature a specialized "XLR connector," a round connection device using pins to attach to ports in audio mixers and stage lighting equipment. Balanced audio is a method of interconnecting audio equipment using impedance-balanced lines. This type of connection is very important in sound recording and production because it allows for the use of long cables while reducing susceptibility to external noise.
XLR connector
Balanced connections use three-conductor connectors, usually the XLR type, which can optimize audio playback by eliminating any noise which may be present in the signal. XLR connections are most commonly found on high-end amplifiers, pre-amp/ processors, and CD players. The XLR connector is a style of electrical connector, primarily found on professional audio, video, and stage lighting equipment.

Types of XLR Connectors

The most common is the three-pin XLR3, used almost universally as a balanced audio connector for high quality microphones and connections between equipment. The XLR-LNE three-pin male and female connectors, originally used for main power connections. Lighting control for entertainment applications is widely connected using five pin XLR Connectors. Many other types exist, with various pin numbers. Many other types of connectors using the XLR type shell exist, with various pin configurations. Designed for male and female type connectors, the XLR connector represents an international standard for this type of audio component. Six pin XLR connectors are used for dual channel intercom systems, and stage lighting control.

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