FilterFreak

Soundtoys FilterFreak is an analog-style resonant filter plugin for adding movement, grit and rhythmic character to your tracks. Shape synths with smooth frequency sweeps, give bass lines a squelchy edge, or turn static loops into pulsing patterns. Its resonance can reach self-oscillation, while seven saturation styles offer everything from gentle warmth to crunchy distortion and pumping compression. For hands-free motion, explore LFO sweeps, tempo-synced rhythms and audio-triggered Envelope or ADSR modes. The Rhythm Editor lets you build custom patterns, and the Groove control adds swing or shuffle. Two included plugins keep the workflow flexible: FilterFreak 1 provides a single filter, while FilterFreak 2 pairs two filters in series or parallel. It suits producers who want expressive wah effects, evolving textures and hardware-inspired filter tones without relying on manual automation.