I picked up this pedal at an auction today. It's a Snarling Dog Black Bawl wah pedal. I know nothing about it. It's in real good shape but I haven't had a chance to plug it in yet. I paid $10 for this pedal and an ART midi controller. I figured it was worth rolling the dice. Anyone know anything about this pedal? Quick search didn't tell me much online. I see that they make a lot of different wah pedals. Not sure what the differences are.