Most saturators hit the whole signal with one shaper. You turn Drive up to get harmonics and the kick gets smaller. You back off to protect the floor and the mids stay polite. Two plugins and a crossover, or one insert that chews everything.

Anneal is three layers and a split.

Each layer has its own style, drive, and band. Heat the body. Leave the sub. Stack tape into tube into transistor on one insert, or run them side by side. Lo-Split keeps the low end dry. Everything above it takes the heat.