John Mayer’s Klon Centaur Overdrive

This seems to be John’s favorite distortion pedal, and he uses it on his solo stuff, and while touring with Dead & Company.

Right now it’s the Klon Centaur. It’s the kindest, most satisfying distortion – it’s the best ‘loud’ I’ve heard. And I’ve always used a Marshall Bluesbreaker from the early nineties. It’s great… I mean for all the new, little boutiquey clean boosts [puts on persnickety voice], like a boost-drive… [laughs]

Music Radar interview (original page seems to be down)