John used a Boss PSM-5 Power Supply and Master Switch briefly during the By the Way tour. According to his tech, Dave Lee, the pedal was used to activate three distortion pedals simultaneously:
It was used to turn on distortion pedals at the same time. I believe three different pedals. It was also used as a power source for some pedals. At least that’s what I remember.
Dave Mail 115: PSM-5, CE-1, MF-103, and Fuzzrite
Why John felt the need to use three distortions at once remains a mystery. If you have any insight or recall him using this setup (for example, during the Slane Castle performance), feel free to share your thoughts in the comments below!
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