Eurorack Modules, RT-1701 EFFEXX Multi FX Processor, RT-311 Swarm Oscillator, RT-451 Dual Multimode Filter Knobcon #6 2017: Voltage and Company presenting our modules. September 9, 2017 Jorg Schaaf Leave a comment Thanks to Tony Gral and Mike Coakley! They are presenting Radikal Technologies at the Knobcon #6 (knobcon.com) 2017!