Quik Lok NC/554-K Heavy-Duty 3-Pin Female Cannon XLR Connector

The Quik Lok NC/554-K is a 3-pin female Cannon XLR connector with a heavy-duty metal housing. Packaged in a bag of 6; price listed is per connector.

Heavy-duty metal 3-pin female Cannon XLR flying connector with radial cable clamp, K Series

The XLR connector is commonly used for electrical connections in the professional audio and high-end audio fields. It is colloquially referred to as a Cannon connector in reference to its original manufacturer: Cannon Electric. This type of connector features a locking mechanism. The XLR connector is used to transmit the signal over a balanced line, allowing equipment to be connected over long distances without a loss of quality due to picked-up background noise. This is made possible by the presence, in addition to ground on pin 1 and the signal to be transmitted on pin 2, of the same signal but with reversed polarity (also incorrectly referred to as being 180° out of phase) on pin 3.