Count me as a long-time member of the Walkabout club... going on like 8 or 9 years with mine now. I'm experiencing my first issue with it now, though. Last night at practice I noticed that there was a bit of a fuzziness over the decay of my notes...it's not cutting in and out, just kind of an extra layer of distortion regardless where the gain & volume controls are set.
I changed out cables, speaker cables, made sure the preamp tubes were seated correctly, etc. I'm going to try swapping out the tubes one at a time tonight, but before I do that, does anyone else have any ideas? Could it be something in the cab, an Aguilar DB210?