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At around 6:00 into this video, Flea's tech shows the Electro Harmonix Q Tron pedal used in Flea's pedalboard during the I'm With You Tour. It looks to be an old style of this pedal.
“We have the Electro Harmonix Q Tron Envelope Filter, which he uses in a few songs here and there and sounds really nice. We use that on Sir Psycho Sexy.”
The source and notes on this submission are correct.
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