I’m not a fuzz expert by any means. I had a space for something and thought for $30 it would be fun to experiment. I had a Big Muff back in the 80’s and it didn’t sound anything like this. This has a spitty quality and the tone control seems to behave very differently depending where the “Bustain” is set. I read this was a Big Muff clone. I don’t know but to don’t think so. Anyone know?