What is the GREY STACHE?
The GREY STACHE is based upon the GGG-tuned and Civil War versions of the EHX Big Muff Pi, creating one versatile guitar AND bass-friendly monster! The tone stack features the ability to keep the unit at "stock" (scooped mids) or boost the mids (important for bassists to punch through in the mix). We offer many mods to allow the user to get everything s/he wants out of a muff.
Includes bypass footswitch, volume pot, tone pot, mids pot, sustain pot, and a 1590BB enclosure.
source: youtube/Fuzzrocious pedals