BE2N is a 22HP eurorack module with two specular Benjolins at its core.
It is intended as a re-design strictly for no-commercial use.
Use it to test and expand your soldering abilities and to investigate this incredible circuit and its sonic capabilities.


The Benjolin designed by Rob Hordijk in 2009, was a a kit to be built in educational workshops to promote synth DIY. The idea is that people can build a medium complexity electronic circuit in a controlled environment and box it later at home.


explaination of how the module works:
interactive BOM and PCB files (about.pdf included):


Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License

[CC BY-NC-SA 4.0]

Authors and credits:

  • To Rob Hordijk creator and original designer of the Benjolin – a mentor and a genuine synth wizard.
  • To Peter Edwards – aka Casper Electronics – for his early and extensive work on the Rungler expansions and mods.
  • To Forest Caver, for his eurorack open source adaptation of the Benjolin which this version is based on.
  • To Derek Holzer from Macumbista for the tip on the Rungler bit out implementation.