These are authentic reproductions of the Roland System 100M modules from 1974 in Eurorack compatible form. There are 11 in total covering VCOs, filters, envelopes, VCAs, modulation, effects and more. The Main unit is the M-110 which has a single VCO oscillator, VCF, and VCA section.

The System 100m offers over 20 modular components to pick and choose to design a custom modular set-up. There are 11 in total covering VCOs, filters, envelopes, VCAs, modulation, effects and more. You can then build upon this system adding any number and configurations of the various other modules which include dual VCOs, ring modulators, dual VCFs, eq, dual VCAs, dual envelopes, LFOs, various …