What is the industry term for an input channel volume control on an audio mixing device?

The industry term for an input channel volume control on an audio mixing device is referred to as a "fader." A fader is specifically designed to adjust the level of an audio signal by sliding it along a track, allowing for precise control over the mix in a way that is intuitive for sound engineers and operators.

While "potentiometer" refers to a variable resistor that can control voltage and is often used in audio equipment for adjusting levels, it is a more general term that encompasses a range of controls beyond just volume, such as tone or balance controls. In the context of an audio mixing console, a fader, which can be linear or rotary, is more commonly recognized and used directly for channel volume adjustments.

The term "gain control" typically refers to the initial amplification of the audio signal, which occurs before it reaches the mixing stage. This is crucial for adjusting the input level to prevent distortion, but it does not describe the adjustable sliding control that determines the final output level in the mix.

A "filter," on the other hand, refers to a component or function that affects the frequency response of an audio signal, rather than its volume. Filters are used to selectively boost or cut certain frequencies but do not directly adjust the overall volume level