OK, I've become a bit of a cheap pedal junkie in the last two years. I actually am very happy with my long-time Boss board ( 5 pedals/ use 4 at gigs), 20+ years now. But last year, after a few years of constantly reading good reports on Joyo, Caline, and Donner pedals, well, I started buying a few, out of curiosity ( selling too, on CL) and actually like many. Enter this little Donner Fuzz, and I like it. I don't really use Fuzz ( have one), more of an OD/Boost user, and I don't even know yet if I will actually use this ( will try!) but I believe this is a clone of some variation of an EHX Big Muff. It has pretty focused, not splatty, intense Fuzz ( with ' Sustain' knob cranked), is NOT Volume knob dependent to do its thing, which I like! ( here, I mean you do not have to crank the pedal's output Level to get the fuzz- so this is a good thing for those of us that play low to moderate volume gigs) And the Tone control has a nice sweep. The pedal would probably really take off with another OD or boost, but I am definitely hearing that David Gilmour kind of " Echoes" " Comfortably Numb" or "Time" solo, grind and sustain to it. I guess I'm surprised, just have to see if I can incorporate it! I really should work up a few Pink Floyd tunes just to see if I could do them justice, with the help of this little guy.