The Erica Synths Dtech VCF module uses the original Russian K140UD12 IC´s as found in Polivoks VCF. The Dtech module is "skiff friendly" and offers advanced functions.
The Dtech module offers CV controllable resonance. Furthermore, the characteristic curves of the filter as well as those of the resonance can be varied by CV. As an additional feature, CV2 can be assigned to control the cutoff, resonance, or to control cutoff and resonance simultaneously to create even more bass. The Dtech VCF has buffered inputs with diode protection circuitry for. An additional diode protection circuit prevents damage to the module if the polarity of the current is accidentally changed. The Dtech responds to 1V/Octave track.
The sound ranges from deep, bass sounds to even more extreme resonance screams as known from the famous Polivoks filter.
Erica Synths Dtech VCF Polivoks VCF Modul