What does Aux mean?

1 Answers
LeFaith
07/30/25 7:11am
Aux is an audio input interface that can output audio from electronic audio devices including MP3 players, with the purpose of connecting to the car audio system to play music from these devices. Aux is the abbreviation for Auxiliary, which refers to an additional signal line design. On audio equipment, in addition to the standard output and input terminals, there are often several input/output terminals labeled "Aux" as backup connection points. When car owners have specific needs, such as requiring additional audio output or input, they can use these terminals. These backup terminals or lines, regardless of being input or output, are collectively referred to as Aux.
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