AUX input

The auxiliary input ( aux of English auxiliary as a prefix for the purposes of incidental / Accessory / auxiliary) is an analog input for stereophonic audio signals .

In addition to the inputs tailored to the specifics of certain audio sources, the AUX input is an additional and universal (because it is not critical) feed option for any audio signal sources for further processing, e.g. B. in audio amplifiers , recorders, mixers or equalizers .

AUX inputs are so-called high-level or line inputs that can process relatively high signal voltages of 150 mV to 770 mV without distortion. Most audio sources, such as the line outputs from CD and DVD players , radios, sound cards and even headphone outputs, can be connected here. The input resistance is in the range from 5 to 50 kΩ, typically 15 or 16 kΩ.

It does not make sense to use AUX sources that are very high-impedance, those that only deliver low levels and need to be preamplified, and those that require frequency equalization ( recording systems of turntables ). Exceptions are special models that have an integrated preamplifier or equalizer - see RIAA curve . Sources that require a supply voltage ( condenser microphones ) cannot work on AUX unless they have their own voltage source.

As a rule, cinch sockets , but also jack sockets are used as plug connections for AUX , with older systems also DIN or Tuchel plugs .