Ok so I got one of these Muff Overdrives today, they're super cheap, I got mine for $44. There's only a volume control on the pedal, but it's perfect for adding just a bit of dark overdrive to your sound. Pretty fat sounding too, a lot fatter than I expected. I think it's a great buy if you're on a budget and looking for some overdrive. I've only played with the pedal for a few minutes but I have a few quick soundclips. Here's the Muff Overdrive with a Fender Jazz Bass for just some slight dirt: http://media.putfile.com/MuffJazzBass Sorry but the strings on that bass are dead, so it doesn't sound as good as it could, but that should give you some idea. And you might guess you can get much more dirt out of this box with a higher output guitar, so here's a soundclip using just the bridge pickup of a Gibson SG Bass for some gnarly dirt: http://media.putfile.com/MuffSGBass The actual sound coming out of my amp is more raw and open, and therefore a little less dark than what you're hearing recorded in this soundclip, but again that should give you an idea. Ok I have one more soundclip of the Muff Overdrive run into a distorted preamp (DHA Standard Dual Bass, first channel only) to show how the Muff stacks with other overdrive. Nice tasty feedback at the end: http://media.putfile.com/SGMuffVTBass That was also the bridge pickup only on the Gibson SG Bass. Anyway, check out this bargain funky vintage overdrive pedal. I dig it.