drive it, and it stays where it was

Saturate an ambisonic bus the usual way and the image moves. Kuules Heat drives the whole field with one gain, so nothing does. Then it gives you three bands, and lets each act on the whole field, its body, or its detail.

The picture shows every parameter. Each band's curve, how deep its signal goes, the crossovers, the levels. Drag them.
A source in front stays in front at +18 dB of drive. Tested on every build.
Warm lows, clean mids, bright top. Or one band, plain.
Saturate the mass of the field, or only its edges.