FabFilter Simplon

FabFilter Simplon is a dual-filter effect for shaping synths, drums, loops and other audio with anything from gentle tonal changes to aggressive resonant sweeps. Its two independent multimode filters offer low-pass, high-pass and band-pass responses, with 12, 24 or 48 dB/octave slopes and serial or parallel routing. Three character options per filter take the sound from smooth, lightly driven textures to raw, self-oscillating resonance. The large interactive display shows both filter curves and lets you move them individually or together, making hands-on sound design straightforward. MIDI Learn, sample-accurate automation and smooth parameter transitions help you build evolving filter movements into your tracks. With presets for quick starting points and a focused set of controls, Simplon suits hobby producers who want expressive filtering without a complex modulation setup.