Also... hilarious recent interview with Premier Guitar:
"Your guitars now sport the Seymour Duncan YJM Fury pickups. How are they different from the DiMarzios you used to use?
In Sweden, where I grew up, the electricity there is a little different. Like 50-cycle or something. The hum wasn’t that bad, but when I came to America it was horrendous. I was using a DiMarzio pickup called the FS-1, which is really hot. I went to DiMarzio and said, “I have an idea. Why don't you put the two pickups on top of each other instead of side-by-side, you’ll get hum cancelling but the same magnetic window.” They made the HS-1 and it was too thin, didn’t have any harmonics. They made two others and I kept the HS-3, but I said, “Listen, this doesn’t have any power.” They said, “Oh no, that’s what you get. What you have is half the pickup because the other half is only for the hum cancelling.” I lived with that for like 25 years. One day Seymour Duncan approached me and, at first, I was skeptical. But let me tell you something, these guys are literally geniuses. We did 21 prototypes. They would send it to me and I would put it in a guitar and listen to it and talk to them on the phone. I tell you right now, and anybody reading this who knows anything about me knows that I don’t promote anything unless it’s [expletive] amazing. I took all the pickguards from all my guitars—literally hundreds of them—and put them in one thing and use it as a boat anchor now."