VCF Lowpass Filter Desktop Modular Synthesizer Pedal

Ever wonder what it feels like to have a slice of Prophet-5 filter magic right on your desk, shrunk down to pedal size? This lowpass wonder uses a CEM3320 chip for that classic 24dB/octave sweep, delivering warm, musical tones with self-oscillating resonance that sings on its own.

Giant knobs make tweaking a joy—Frequency sweeps the cutoff smoothly, CV attenuates incoming modulation with an invert switch for polarity flips, and Resonance dials in everything from subtle warmth to screaming peaks (expect a touch of volume drop at max). Patch in via 1/4" audio in/out, plus 3.5mm CV for frequency control that doubles as a VCA with a 5V signal. It's a compact desktop modular at 4.7 x 2.6 x 1.5 inches, powered by standard 9V DC negative center—perfect for chaining with other Hungry Robot boxes or Eurorack gear.

Players love its tactile response and versatile sound, calling it a go-to for fattening guitars, synths, or drum machines, though some note the non-1V/oct tracking keeps it creatively unpredictable rather than strictly melodic.