Alternatives to the Fairfield Circuitry Long Life

Maxon AF-9 Auto Filter

Shared character: peak, natural resonance, analog

Electro-Harmonix Nano Q-Tron

Shared character: peak, natural resonance, filter

Electro-Harmonix XO Micro Q-Tron

Shared character: peak, natural resonance, filter

Lazy Bear Effects High Pass Filter

Shared character: filter, response

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

Shared character: resonant, natural resonance, filter

Carl Martin Ottawa

Shared character: natural resonance, filter, response

Chaos Custom Shop Sub Sonic Filter

Shared character: filter

Chaos Custom Shop HPF

Shared character: filter

Dunlop Cry Baby

Shared character: peak, natural resonance

Behringer Meatball Restyled

Shared character: resonant, analog, filter

Electro-Harmonix Q-Tron Plus

Shared character: peak, natural resonance, filter

Electro-Harmonix Micro Q-Tron Envelope Filter

similar tone character

Ivy Pedals Tone Zone

Shared character: filter

dpFX Pedals Variable Low Pass Filter

Shared character: high end, filter, subtle

Empress Para EQ DLX

Shared character: combination, filter, noise

Subdecay Proteus MKII Sample

Shared character: natural resonance, filter, subtle

Spaceman Artemis Modulated Filter

Shared character: filter

MXR Q Zone Fixed Wah

Shared character: peak, filter

Vox V847 Wah

similar tone character

CALIFORNIA WUB Continuum EQ

similar tone character

Vox V 847A Wah

similar tone character

Vox V847A Wah

similar tone character

Emma DiscomBOBulator

similar tone character

Creation Audio Labs Funkulator

similar tone character