Citation:
We also added a modification to make the circuit better adapted for any playing situation.
Because the Big Muff Pi has such a scooped mid EQ, it can make it hard to cut through in a band
setting or impossible to nail your favorite famous recorded muff tones because of post recording
EQ. We added a 4 way EQ switch that affects how the tone knob works. Position 1 is the
standard mid scooped tone knob that we all know and love. Position 2 is a flat mids tone knob that
you'll find on a lot of the modern boutique Muff clones. Position 3 is a mid hump tone knob which
really cuts through and gives it a real overdrive flavor when you roll back on the guitar's volume
knob. And position 4 is a tone knob bypass, like you'd find on some of the later versions of the Big
Muff Pi, but never before on the Triangle or Ram's Head Era versions. When you take the passive
tone stack out of the way, the tone knob bypass offers a huge volume boost with unadulterated
vintage muff tone....very cool!