At each end, XLR connectors either have three pins (M) or sockets (F) within a locking metal shell. They are commonly used in professional audio applications to connect microphones, mixers, recording equipment and other gear. On typical XLR components, pin 1 is the + signal line, pin 2 is the - signal line and pin 3 is the ground/shield. This pin combination facilitates top-quality, low-noise, balanced audio, even across long-distance cable runs.
• Phantom Power
XLR cables are also capable of carrying DC "phantom power" to microphones on both the plus and minus signal lines. Shotgun and lavaliere microphones typically use phantom power or must use on-board batteries.
• Shielded Ground
The 3rd pin is connected to a copper-wound shield. Wrapped around the other two wires, this shield provides both an interference-blocking barrier and a grounded connection.
Cable Type
3-pin to 3-pin XLR Cable
Length
20' (6 m)
Ideal Application
Used to connect a microphone to an amplifier, mixer or other professional device, or to another length of XLR cable.
