Envelope filter with 4-pole lowpass. Attack and decay shaping plus expression control.

Updated envelope filter with improved tracking and expanded frequency range.

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

MK2 dual envelope filter with refined tracking and expanded sweep range. Two filters, infinite funk.

Compact dual-effect pedal combining phaser (4/6-stage) and envelope filter in the Smalls format.

DIY PCB for building a Lovetone Meatball clone - the heavily tweaked Mu-Tron III envelope filter with blend and loop.

Envelope filter with up and down sweep modes, funky quack and touch-sensitive response.

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

Dual low-pass envelope bi-filter with Color blend control. Forward and reverse sweep directions.

Compact envelope filter. The legendary Mu-Tron III character in smaller format.

Compact auto-wah with Sensitivity, Bias, Resonance, and Decay controls under a flip-top cover.

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.

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

Envelope filter with resonant lowpass and multiple modes.

Dual-envelope filter with extensive parameter control and independent high/low filters.

Envelope filter with dynamic frequency response to playing dynamics.

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

Voltage-controlled low-pass envelope filter with sweep direction, resonance, and switchable range.

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

Budget envelope filter/auto-wah in micro format. Funky quack that responds to pick dynamics.

Dynamic envelope filter with flanger and phaser effects.

Envelope filter with Stroke (sensitivity), Fwonk (bass), and Juice (peak height) controls.

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