The Phase/Timbre Mod 06A is a triple function module. The TOP section is a 1440 Degree Phase Shifter with Resonance and voltage controlled shift. Timbre MOD (mid) section is a wave multiplier that works with simple waveforms to add complexity by distorting the waves shape. The Timbre MOD (lower) section is a hard clipper/rectifier for aggressive distortion effects.
These merchants probably sell this module. Huh?