All-analog envelope filter with tap tempo LFO mode, 8 rhythmic patterns, and expression input.

Moog Moogerfooger MF-101 recreation with 2/4-pole filter, envelope follower, and expression input.

Updated Danish envelope filter legend, refining the world-class auto-wah formula.

Envelope filter with dynamic frequency response to playing dynamics.

Expanded envelope filter/wah/octave with three filter flavors, three octave voicings, and flexible routing.

Custom Line auto-wah/envelope filter. Funky dynamic filter in mid-tier line.

BJF envelope filter based on 1991 rack design. Lightning-fast tracking, tuned like a real wah pedal.

Legendary downward-sweeping envelope filter from 1973 by Craig Anderton with voice-like synth response for funk and bass.

Envelope filter based on the legendary Guyatone WR-3, with added controls for range, gain, and guitar/bass voicing.

Dynamic envelope filter with flanger and phaser effects.

Dual-channel envelope filter/wah and octave for funk and soul with two filter modes and expression input.

Lovetone Meatball clone. Dual-mode envelope follower and triggered filter with deep controls.

Envelope filter with resonant lowpass and multiple modes.

Envelope filter with harmonic density engine, LFO, 4 filter modes, CV patch bay, expression—400mA/9V, 124x99x61mm.

Funky, squawky envelope filter for wah-like quack.

Legendary envelope filter with extensive parameters. Holy grail of envelope effects, now discontinued.

Compact envelope filter with BP/LP switch and Blend control—quick to dial in for guitar, bass, and keyboards.

Mu-Tron-style optocoupler envelope filter with voltage doubler for extra headroom and three filter ranges.

Dual-section analog envelope filter meets gated octave fuzz -- pure synth madness.

16 filter and synth models including envelope followers, talk boxes, and ring modulators.

Fuzz into envelope filter with sidechain—Curt Bisquera's signature for funky quack and grit.

TB-303-inspired acid envelope filter. Low-pass with resonance, saturation, and quacky attack sounds.

Danish envelope filter considered the world's best auto-wah, Pino Palladino approved.

Hand-wired bass-optimized Snow White AutoWah. BJF envelope filter voiced for low frequencies.