Got a request for this one. It's a nice boost with a 3-band EQ. Pots are board mounted and it will fit in a 159… | Diy guitar pedal, Guitar pedals, Distortion pedal
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Guitar Pedal X - GPX Blog - A Brief Hobbyist Primer on Key Tone Stack Types and Circuit EQ Configurations - in collaboration with Master-Builder Adrian 'Thorpy' Thorpe
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Simple, Easy Parametric and Graphic EQ's, Plus Peaks and Notches
Modding guitar pedal to a line level processor + widen frequency bands : r/diypedals