R-51 VCA/Distortion
R-54 Supermodule VCO/VCF
R-55 Thyratron VCO
R-51 (Ben Davis Special) custom build only
Supermodule VCO/VCF
R-53 Vacuum Tube Waveshaper / Ring Mod
Self-Tuning Midi to CV
Tube Reverb
Dual VCA
Metasonix PSU for R and RK series Eurorack Modules
Oscillator, Filter, VCA
VCA/Distortion/Preamp
Tube Waveshaper/Ring Modulator
Tube Bandpass Filter/Oscillator
Thyratron VCO
Vacuum Tube Dual Lowpass Gate
Dual-triode 12dB LPF
Metasonix/Serge Random*Source-style 4x4 custom unit
Metasonix/Serge Random*Source-style 4x4
RK1 Noise Drum and Dual LPG in RS/Serge format (custom build only)
Combo module with RK3/RK6 for RS/Serge 4x4 format
RK2 XS-VCA + RK3 Ringer Shaper + RK4 FILTER / VCO
Six Bandpass Filters
Vaccuum tubes multi-effects
Dedicated power supply + controller