Alternatives to the Maxon AF-9 Auto Filter

Electro-Harmonix Riddle Q Balls

Shared character: soul, peak, sensitivity

Electro-Harmonix Doctor Q

Shared character: soul, sensitivity, pick_attack

Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter

Shared character: soul, sensitivity, pedal

Dunlop Cry Baby

Shared character: peak, natural_resonance, pedal

Carl Martin Ottawa

Shared character: soul, sensitivity, natural_resonance

Fender Pour Over Envelope Filter

Shared character: soul, sensitivity, signal

Electro-Harmonix Nano Q-Tron

Shared character: peak, sensitivity, natural_resonance

Electro-Harmonix Q-Tron Plus

Shared character: peak, natural_resonance, filter

Electro-Harmonix XO Micro Q-Tron

Shared character: peak, sensitivity, natural_resonance

FTelettronica Envelope Filter

Shared character: soul, sensitivity, natural_resonance

Electro-Harmonix Micro Q-Tron Envelope Filter

Shared character: soul, sensitivity, natural_resonance

MXR M120 Auto Q Wah

Shared character: controls, sensitivity, pick_attack

Emma DiscomBOBulator

Shared character: controls, soul, sensitivity

Musitronics Mu-Tron III

“associated with vintage units like the Mu-Tron III”

Ashdown Type 23 Three Band Filter

Shared character: soul, live_performances, sensitivity

Fairfield Circuitry Long Life

Shared character: peak, natural_resonance, filter

Aitone AT-08

Shared character: sensitivity, filter, response

Tycobrahe Parapedal Wah

Shared character: peak, filter, response

CALIFORNIA WUB Continuum EQ

Shared character: controls, peak, natural_resonance

Subdecay Proteus MKII Sample

Shared character: natural_resonance, pick_attack, filter

Smokin' Amp Co. Micro V Envelope Filter

Shared character: pick_attack, filter, response

Death By Audio Deep Animation

Shared character: sensitivity, pick_attack, filter

Behringer BM-15M Murf Box

Shared character: natural_resonance, filter, pedal

Vox V863CA Auto Wah

similar tone character