Audio Jack

An audio jack is a cylindrical connector socket designed to receive audio plugs for transmitting analog audio signals. It provides a standardized interface for connecting headphones, speakers, microphones, or other audio devices to electronic equipment like smartphones, computers, amplifiers, and audio interfaces. Common sizes include 3.5mm (1/8 inch) for portable devices and 6.35mm (1/4 inch) for professional audio equipment, with configurations supporting mono, stereo, or stereo with microphone connections.