Simple Explanation

A sliding control on a mixer that adjusts how loud a sound is.

Concise Technical Definition

A linear or rotary control used to adjust the output level of an audio signal on a mixer channel, subgroup, or master section.

Layman-Friendly Analogy

Like the volume slider on your phone, but for each individual sound in a full mix.

Industry Usage Summary

Used in live sound, recording, and broadcast to control individual channel levels or overall mix levels. Often found on mixing consoles as long vertical sliders.

Engineering Shortcut

Signal level control—linear slider on a mixer.

Full Technical Explanation

A fader is an analog or digital control used to vary the amplitude of an audio signal, typically represented by a physical slider on a mixing console. Faders are commonly used for individual input channels, subgroups, or the main output (master fader). Their linear design allows for precise level adjustments and quick visual feedback. Some faders are motorized in digital or automated systems, allowing movement to reflect saved settings or automation data. Faders operate on a logarithmic scale to match human hearing sensitivity and ensure smooth volume changes.