The blocky rectangular plugs, molded of clear plastic ... and the modular connectors became known as registered jacks, or RJ for short. Six-conductor RJ11 became the standard for connecting ...

Ultimately, a cable requires jack plug connectors at each end to plug into your guitar and your amplifier or pedalboard, with a length of conductive metal between, allowing the electrical signal ...

which superseded Apple's own 30-pin and Lightning connectors as well as the 3.5mm headphones jack. The Apple device contains the socket, and the cable or docking station has the plug. In 2012 ...

Also called a 3.5mm or 1/8" connector, it is a plug and socket widely used for analog audio signals in portable devices. For example, the headphone jack on iPods, tablets and portable DVD players ...

Either size can support stereo sound and/or a microphone, depending on the number of separate connector rings on the plug and jack. 2.5mm refers to the approximate diameter of the connector.