Alchemy Audio repairs, modifies and builds guitar effect pedals, amplifiers, instrument cables and microphones. Our clients include everyone from beginning players to members of Megadeth, Anthrax, John Mayer, Bruno Mars, Counting Crows, Lucinda Williams, Joe Walsh, Tracii Guns, Wilco Devon Allman, Jake Shimabukuro, Five Finger Death Punch, and Smashing Pumpkins. Buy with confidence! We also buy, sell and trade gear. Visiting Chicago? Contact us for a tour of our workshop / showroom. We also host effects pedal building classes, regular open house events and an annual music instrument gear swap festival.