The audio interface input channel is used on each audio interface inputs and ensures a calibrated audio interface that converts voltage to fullscale (FS). Every input on the audio interface will be shown as this type of inputs this is true for analog inputs and digital inputs.
If you want help to get started with USB sound cards check out our getting started guide on USB sound cards, or learn more about audio interfaces in general look below:
INx is the name of the input and for input 1 the name will be IN1, input two will be IN2 and so forth.
Show is a checkbox to show and hide the input
Sensitivity is the input sensitivity of the channel. It is default 1 FS/V, and it is the number of how many volts are required for 1 FS
Calibration date is last date where the sensitivity has been changed
Calibration note is if you have added a comment to the calibration e.g. gain level for the calibration.