Eurorack DIY Behringer 140 FFB 150 PLUS System-H 921 VCOs Ge0sync TB-EFA Module Maffez D3MIX (DeMix) Model 5 (SH5 style) Model A+ (BA662 VCA) Model F (AS3109 VCF) Model Y (SY-VCO) POLEY (Pole Mixing VCF) Mutable Instruments Ripples Pharmasonic Sy-Core Nalasound Look of approval