Hi, I just got a V4BH. I know to some it is not the real deal (as opposed to a V4), but it is the only one I could get my hands on. Question to the collective V4 users: Does experimenting with the tubes improve the (already great) sound ? It is a 2002 model.
They're great heads, and they sound fantastic. I wouldn't go tube swapping, unless there was a problem.