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In this live clip he's using some kind of octaving effect, with excellent tracking, and the first visible glimpse of a large red pedal is at 20:05 https://www.youtube.com/watch?v=a7aBs66HXrU (It's gotta be a Whammy).
Also here, a Whammy is clearly visible on the desk. https://www.youtube.com/watch?v=zhVgbZdMdb0
The source and notes on this submission are correct.
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