Penrose is a simple CV quantizer DIY kit for the eurorack format. It takes an incoming continuous CV voltage and converts it to the nearest note in a scale. Active notes can be selected with the 12 buttons. You can use it to tune the output of your analog sequencer, as a semi random melody generator, for fast chiptune arpeggios and much more.

It comes as a complete kit with all needed parts to build it. That includes a multi colour aluminum frontpanel, high quality jacks and illuminated bi-color push buttons.

The project is open source, so the schematic and source code is available

CV input voltage: 0-10V
CV output voltage: 0-10V


  • 60 mA +12V
  • 3 mA -12V
  • 0 mA 5V
  • 40 mm deep
  • Ø 4.38 (34 Votes) Average Rating

Module is available as a DIY project only.

No info about availability.

6 HP Quantizer
submitted Jan 8th 2015, 13:11 by EarlJemmings | last Change Nov 13th 2017, 04:20 by cielux

Date Region Description Price Seller
USAPenrose is a small DIY quantizer module for the eurorack format.Very, very li...$140.00 View
EUPenrose quantiser in excellent condition. Fully working, very little rash. [...$122.89 View
EUSonic Potions Penrose (DIY) w/custom Alu panel More modules fo...€115,00Darylc View
EUDIY Penrose. Like new, both aesthetically and functionally. Price is 120€ plu...€120,00sromanel View

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These merchants probably sell this module. Huh?