What are the uses of aux in and aux out? How do they differ from each other?

What does Aux In mean on a speaker?

Aux in and aux out are terms commonly used in audio systems and devices. They refer to specific connections that allow for the input and output of audio signals. While they serve similar purposes, there are some differences between aux in and aux out.

Aux In:

• Aux in stands for auxiliary input.
• It is an input connection on a device, such as a mixer, amplifier, or car stereo system.
• Aux in is used to connect an external audio source, such as a CD player, smartphone, or mp3 player, to the device.
• It allows the audio signal from the external device to be played through the speakers or outputted to other devices.
• Common examples of aux in connections include 3.5mm headphone jacks, RCA connectors, or TOSLINK inputs [1][2][3].

Aux Out:

• Aux out stands for auxiliary output.
• It is an output connection on a device, such as a mixer, amplifier, or audio interface.
• Aux out is used to send the audio signal from the device to another device or system.
• It allows the audio signal to be routed to speakers, headphones, recording units, or other audio devices.
• Common examples of aux out connections include RCA connectors, XLR outputs, or TOSLINK outputs [1][2].

Differences between Aux In and Aux Out:

1. Function: Aux in is used to input audio signals from external devices, while aux out is used to output audio signals to other devices or systems.
2. Connection Type: Aux in connections can include 3.5mm headphone jacks, RCA connectors, or TOSLINK inputs, while aux out connections can include RCA connectors, XLR outputs, or TOSLINK outputs.
3. Direction: Aux in receives audio signals, while aux out sends audio signals.

Learn more:

1. What are aux in and aux out used for? How are they different ...
2. Amp connections: AUX, TOSLINK, RCA | Teufel blog
3. What is aux-in?