Mastering.com breaks down Mod Map in Alchemy, a tool that modulates your modulation instead of creating new movement from scratch. Instead of adding a fresh source, it reshapes how an existing one, like an LFO or MSEG, actually behaves.
The curve control lets you accentuate or soften the intensity of that secondary modulation. A near-imperceptible LFO on a filter cutoff can become a dramatic, exaggerated sweep just by reshaping its mod map curve.
Because mod map targets secondary sources rather than main modulation destinations, it works through its own dedicated slot rather than the usual modulation routing. Stack multiple mod maps, dial in depth, and route them to new LFOs to build rhythmic variation on top of what you've already programmed.
The real value is nuance: shaping how modulation feels, not just what it targets, to add movement and rhythm without redesigning your patch from the ground up.