Red Hot Chili Peppers
The rapid clean riff was probably recorded with Frusciante’s 1962 Stratocaster through his Marshall Major and Silver Jubilee setup. The outro used an Electro-Harmonix POG for an organ-like octave texture, followed by three separately recorded distorted notes forming the final arpeggio; exact controls are approximated. Source: Ground Guitar’s Stadium Arcadium song-by-song breakdown and Guitar World’s Frusciante technique feature.