Pura Ruina is a three-stage CV-controlled fully-hyphenated full-wave rectifier/distortion designed for audio. Each stage has an individual level control with corresponding CV and individual out, as well as feeding to the universal Sum output. PR’s rectification creates a unique flavor of distortion unlike standard wavefolding or clipping. Even simple waveforms sound amazing through PR. Add some CV and you’ll never want to let PR out of your rack!