Flea doesn't use many effects, relying on these four for all of the tones he needs. Left-to-right he uses a Malekko Bassmaster for fuzz and distortion, MXR Micro Amp used as clean boost for slapping and leads, Electro-Harmonix Q-Tron used for "Sir Psycho Sexy," and a Moog Mooferfooger 12-Stage Phaser used just for fun. The board is powered by a Voodoo Lab Pedal Power 2 Plus.