Mod Rex

Electro-Harmonix built the Mod Rex for complex, layered modulation. Tremolo and filter sections run at different but related rates. Tap tempo sets the master rate. Each section has its own time division relative to the tap. The polyrhythmic interaction creates textures simple modulators cannot. Tremolo section handles amplitude modulation. Filter section sweeps frequency. Running them at different divisions creates evolving patterns. Polyrhythmic modulation