https://cogginsaudio.co.uk/product/cogmeister/
The Dinosaural Cogmeister is a single guitar booster/overdrive/distortion/fuzz pedal containing a trio of compatible gain sections (no op-amps, just transistors) arranged in fixed series pattern.
Dan Coggins on the Cogmeister:
“The entire pedal (i.e. each of the three sections) uses only Class-A operated discrete silicon transistors and is an original design by myself, though it had been percolating both in my mind and on scribbled notes for a decade, since I dreamt up a 3-in-1 gain pedal that I could use on crammed, tiny pub/club gigs (that I was doing locally in those days, circa 2011) where there was often only space for one medium sized pedal within the footprint of my mic stand, while I was rooted to the spot! The Covid lockdown 3 years ago provided me with an opportunity to casually make and refine a prototype as a hobby project - originally just for me - that turned out better than anticipated, hence my return to manufacturing after some years!”