The riff that conquered the world, played on a cheap Kay hollowbody through a DigiTech Whammy set to octave down, into a cranked Silvertone amp. The Whammy pedal makes the guitar sound like a bass on the iconic main riff, while the Silvertone's raw, lo-fi tube distortion adds grit and character. Jack White's entire approach is built on cheap, broken-sounding gear pushed to its limits — the imperfections ARE the tone.