Cobalt Saphira.

Cobalt Saphira is a harmonic generator that separates odd from even harmonics and lets you place them at chosen frequencies. That separation is the useful part, since even harmonics read as warmth and clarity while odd ones add edge and grit, and most saturation gives you the two already mixed together. Modelled tape processing adds depth and movement on top. It suits individual tracks, buses and full mixes equally.