Works great!! Has a little bit of discoloration on the case but other than that is totally clean and functional. This is the only Big Muffin circuit I have found that is able to really get more top end with the EQ control. And it really sounds fantastic!! Most Big Muffs sound kinda muddy to me. This one has a lot wider range to my ear. So it will do the traditional Big Muff thing, really well, but also can squeal similarly to the Hizumitas pedal from Earthquaker. Which was based on a Big Muff clone. So that makes sense. Im not sure what version that clone was a clone of. Haha. But I feel like this one is very close to that pedal.