This resembles the thick, warm, vintage fuzz sounds of the
amazing "Fuzz Face" and "Tone Bender" pedals
from the 60's, but their Germanium transistors have been replaced
by my silicone transistors and simpler, more efficient circuitry.
Increasing the Attack level results in a crazy, radical fuzz
tone, while adjusting the Input Bias on the side can reduce the
bass and allows you to drive the amp like a clean booster.