There are five loops built around six pedals in a drawer toward the top of Petrucci’s rack. Inside, there’s a TC Electonic Hypergravity compressor, a Keeley Red Dirt Overdrive, a TC Helix phaser, a Boss AW-3 Dynamic Wah, a Boss OC-3 Super Octave, and Petrucci’s signature TC Dreamscape multi-effects unit. Yes, TC users, you can download John’s settings via the company’s TonePrints app. It’s all switched via an RJM Music Technology MIDI controller at John’s feet, onstage.