I was lucky enough to spend a few days with him last July - he played a very small venue (50 - 70people?). I seem to remember him using a Boss ME-70 (or similar) multi effect pedal. One night his pre-amp went bang and he was asking around anyone who'd got a replacement - I think he was after a fishman (but don't quote me on that). At that venue he went through a Bose house PA.
Sounded great - but I suspect that has more to do with Don than his kit
Paul.