I was thinking about building a Unison Double tracker for my rig, I have a Rat i built that is a permanent part of my setup, and I'm def gonna try the Abyss when i complete it here in a day or two.
Question: what are the most common 'mods' for pedals that make it handle low frequencies better? Or more accurately, in a distortion circuit, how do we set the high pass of the harmonic distortion? I've inferred that monolythic capacitors are preferred to ceramic disk when available in terms of low frequency response, is that true, and if so, does it apply to Film Box capacitors vs Mylar/coated?
TL;DR: what are we looking for when designing/modding a distortion circuit for bass applications?