This is a very short demo of the Analogue Systems rs430 Distortion Module.

via bigcitymusic:

First dry, then wet…This cool little module is based on the classic Univox Super-Fuzz pedal. The Super-Fuzz is considered by many to be the holy grail of fuzz pedals. We’re using the Cwejman VCO-2RM oscillator, the ADSR-VC2, the INS-2MX and the MMF-1 multimode filter. The rs430 has CV input for distortion amount and dry/wet mix. The rs430 uses two germanium diodes to produce the unique squarewave clipping and — it — sounds — sweet!