The Befaco Even VCO is a voltage controlled oscillator which remains reliable even in the case of power supply fluctuations.
The i? Instrument Interface is a Eurorack module that takes a range of signals & transform them into compatible voltage levels.
The BF-22 VCF is a dual Hi/Low-pass filter inspired by the Sallen-Key filter of the MS-20, among the first portable mono-synths.