Here's what Noise Engineering say about the Pura Ruina:
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!
Pura -- from Latin: “pure”
Ruina -- from Latin: “destruction”
- 8 HP
- +12v: 75ma
- -12v: 65ma
- +5v: 0ma