Upd - Saturation Knob

The saturation knob is not a cure-all. It won’t fix a bad arrangement or a terrible recording. But in a world of surgical EQs and multiband compressors, it’s a joyful reminder that sometimes the best processing feels less like engineering and more like turning up the color.

Because simplicity forces musicality. Without attack, release, ratio, or knee, the saturation knob removes analysis paralysis. You turn it clockwise until it sounds good—then back it off 10% for safety. It’s immediate, tactile, and hard to mess up. saturation knob

Here is an interesting look at why the saturation knob is the most "human" control in your arsenal. The saturation knob is not a cure-all

It was a "soft clipping." It was distortion, sure, but it was musical distortion. but it was musical distortion.