Slider on mixer or DAW controlling channel level — movement is synchronized, target is position. Essential in mixing and mastering.
At the mixing console, you sit in front of a series of sliders – these are your faders. Each controls the volume of a channel, from dialogue to music to ambient sound. The physical movement of the fader directly determines the level: up is loud, down is quiet, all the way down is off. Unlike rotary knobs (potentiometers), the fader operates vertically or horizontally – the linear movement makes it intuitive and reproducible.
On set during sound recording, you use faders for live adjustments: an actor speaks too quietly, fader up. Ambient noise too loud, surround channel down. In editing and sound mixing, faders are used for automation – you record movements so that levels adjust themselves during playback. A female narrator can slowly get louder in dialogue while the music fades out in parallel – all controlled by fader curves in the DAW (Digital Audio Workstation). This is sound direction through movement.
The standard fader on broadcast consoles (like the Yamaha series or SSL consoles) has a very specific feel and resolution. A 100 mm fader allows for finer level control than a 60 mm model. Some set sound recordists prefer large faders because they allow for fatigue-free operation; others opt for compact consoles with shorter sliders for quick adjustments. In the DAW, the movement is virtual – mouse or touch control – but the automation works the same way: set keyframes, draw a curve, play back.
A common mistake: pulling the fader too quickly. This is audibly perceived as a volume jump instead of a smooth crossfade. Good fader operation is craftsmanship – steady, targeted, recognizing microtonal adjustments. At the mixing console during sound recording, this is a live skill; in post-production, mistakes can be corrected, but the best solution is still: correct level setting before recording, use fader movement sparingly.