Picked one of these up at a pawn shop Saturday. I couldn't try it so I bought it with the understanding I could return it if it didn't work. It works, but it's a little strange. I tried it with a P-90 equipped guitar. Turning the fuzz knob below 9 o'clock turned the sound off. Similarly, turning the fuzz all the way up, then turning the volume down on the guitar could cause it to cut out completely. I can think of a couple reasons it might act this way: 1) they want you to be able to get that spitty, low-input level sound that's just at the verge of cutting out and to be able to get it even with high output pickups, and this results in a prety big range of cutting out when using lower output pickups; or 2) it's broke. I watched a few YouTube reviews of the pedal. None of them mentioned this "feature," but none of them included a demonstration of what the pedal sounded like with the fuzz level turned down below 9 o'clock either. Anyone know whether this is normal behavior for this pedal? I'm inclined to use it with the knob all the way up and control the amount of fuzz/spit with the guitar's volume knob. It sounds pretty decent when it's at 3 o'clock or higher. I wasn't impressed with the low input spitty sound, compared to other fuzzes I own.