Welcome to our annual Amp Issue! In addition to great interviews with players like Robert Randolph, John Scofield, the Stooges' James Williamson, and Fall Out Boy's Pete Wentz, Patrick Stump, and Joe Trohman, in this issue we dive into all sorts of amplifier awesomeness. First off, for those of you who've always wondered exactly how a tube amp works, we break it down into simple, easy-to-understand concepts using a vintage Vox AC4 as an example. And, since your speakers have such a big impact on your tone, we also bring you a step-by-step DIY project on how to correctly replace speakers in your combo or extension cab. And for those who can't get enough of vintage amps, Ask Amp Man blogger Jeff Bober from East Amplification takes us on a tour of the North American Guitar Amplifier Museum-a veritable candy store full of Marshalls, Fenders, Hiwatts, Ampegs, Voxes, and other rare amps. Our gear reviews this month include the Charvel Desolation DX1-ST, Cole Clark Angel, Z.Vex Fat Fuzz Factory, Jaguar HC50, Epifani AL 112, EarthQuaker Devices Disaster Transport SR, Nordstrand Shush Puppies, and the Electro-Harmonix Epitome.