hcl
HCl is a TB-303-inspired resonant lowpass filter plugin for the Expert Sleepers Disting NT. It emulates the distinctive "acid" sound with an 18dB/octave slope (mismatched first pole like the original 303), squelchy resonance without self-oscillation, per-stage transistor-style saturation in the ladder, and post-filter diode overdrive for grit. Features stereo audio processing with V/Oct tracking, CV modulation for cutoff, resonance, and drive, plus a "Cream" mode that adds low-shelf boost and soft saturation.
Find the project and more detailed documentation on GitHub: