The doctor Q is a good piece of kit (and I’m talking about the old-style one now, not the nano), which can give some pretty funky sounds, which as other people have said, are best for funk rhythm guitar. My only complaint with this pedal is that it sounds FAR more subtle on single coil pickups than humbuckers. maybe this can be solved with the knockout attack equaliser? I don’t know, but to me it sounds pretty good.