4 ON THE FLOOR CLASSIC BASS OVERDRIVE PEDAL - Genzler Amplification
I made a tiny high-pass filter : r/diypedals
FDeck HPF-Pre Series 3 Upright Double Bass High Pass Filter Preamp Phase Reverse | Reverb
Review - Broughton Audio: Josh Wah, Low+High Pass Filter, and Apex Compressor - Bass Musician Magazine, The Face of Bass
SMALL FI 4 BASS CUT LO FIDELITY EFFECT PEDAL PASSIVE EQ HIGH PASS FILTER LOW | eBay
Used Broughton Low + High Pass Filter Bass Effect Pedal | Musician's Friend
Broughton High Pass Filter 2016 Black & Gray | Reverb
Origin Effects Cali76 Compact Bass '64 Black Panel
NPD - Broughton Low + High Pass Filter. Does a great job of cleaning up muddy low end and hissy high end frequencies I don't want. Just the creamy middle! : r/BassGuitar
Cali76 Compact Bass – Origin Effects
Tech 21 Q-Strip EQ and Preamp Pedal Direct Box With 4-band EQ, LPF And HPF | Full Compass Systems