Ljunggren Audio

Roll Your Own

Eurorack DIY


Kymatica Devices


We are proud to present a new line of eurorack modules designed by KYMATIC DEVICES! They are produced by RYO/Ljunggren Audio under license from KYMATICA DEVICES.





The first collaboration between RYO and KYMATICA DEVICES, a dual VCA / Crossfader / Four-Quadrant-Multiplier (Ringmodulator / VC-polarizer) with mix output. The output of the first channel is normalized to the input of the second. Works for audio as well as CV.





If you have any issues with your Kit or your Assembled RYO module, don't hesitate to drop us a line on info before @ followed by ljunggrenaudio.com and we will do our best to help you.


Regarding our PCB/panel only offerings, please note that these are mainly offered due to popular demand from the experienced DIY community. Hence we are counting on that you know what you are doing and how to source parts. If you feel the least bit uncertain, please consider going for the kit.