Seasick Steve, purveyor of authentic blues and one the most unlikely headliners at the Albert Hall, uses a Roland Cube amp when he performs.

Here's a quote from the recent interview in Guitarist (Oct 2008):

“When I play live I always use a Roland Cube amp. My kid had one and I checked out the Tweed setting. I thought, Hmmm… okay – plus they’re really cheap. I put it on a chair right next to me. No pedals. I just turn the amp up!”