Since I'm the official Fender electronics repair guy for Interior Alaska, I get some pretty cool widgets in the shop. This guy brought in this 1968 Big Muff fuzz box to be cleaned up and checked over. I've fiddled with just about every stomp box in existence, but this thing is amazing....I can sound just like Eric Clapton with this thing, and I'm only a semi-competent blues guitar player guy. Best sustain of anything I've played with. He almost didn't get it back. Carry on.