Generally speaking cables have connectors (or plugs). Audio cables are not an exception and audio connectors are very important parts in the audio chain. There are many types of audio connectors but the most common are :
RCA connectors also known as phono connectors - used for analog and digital signal (here you cold find an audio cable with RCA connectors)
TRS connectors known as jack plug (6.35mm - quarter inch), mini-jack (3.5mm - miniature or 1/8 inch) and subminiature (2.5mm) for both versions, mono and stereo
XLR connectors also known as Cannon plugs used for analog or digital balanced audio
TOSLINK connectors for optical connections (also known as Toshiba link)
