
ACL Discrete Core Ladder VCF is a VCF module for modular synthesizers in Eurorack format. It is based on a classic 24dB transistor cascade with three inputs. At the audio input there is a 3-channel mixer to put the audio signals in the right proportion. Four outputs with phase shifted 90 degrees each are available with -6 dB, -12 dB, -18 dB and -24 dB edge steepness. The cut-off frequency and the resonance are voltage controllable. In addition, a 1V/Oct input is available to play the filter during self-oscillation. This makes it a quadrature VCO.
ACL Discrete Core Ladder VCF EX DEMO