Audio Filters

Stand-alone filters are relatively rare. A short list of static & variable filters plus a few outliers

Static EQ-style filters

Dynamic Synth-style filters

Dynamic & Programmable Equalisers

Modwiggler filter thread

https://modwiggler.com/forum/viewtopic.php?t=50143&start=10

Reddit Synth outboard filter page

Could we list all the Filterboxes we know?
byu/Seri05 insynthesizers

Peavey Spectrum Filter #1

MAM Warp Nine Analogue Midi Filter #2

 

Wavetek Model 442 Filter Set

Electrix Mo-FX

Jomox T-Resonator II

Analog Heat Mk II

Sherman Filterbank 2 Compact

Mutronics Mutator

Akai MFC42

MAM PCP330 Procoder

MAM VF11 Vocoder

FAT THC-00 Resinator Filter

FAT THC-00 Resinator Filter

Waldorf 2-Pole Filter

Bugbrand Bugcrusher 08

Bugbrand Bugcrusher 08

MAM Filterbank 8

MAM Filterbank 8

Filter Factory Mk2