So, I've got some new and some new-to-me gear. The new is an Avatar 210, which has its 212 big brother on the way. The new-to-me is a Carvin B500 head. For the most part, I like the sounds that I'm getting ... one annoyance, though ... I've got several rattles and other sorts of sounds that shouldn't really be there, at least as far as I know. Perhaps the most serious is this ... I get a very slight almost overdrive when I play - not so much in the high register, but most noticably on the low B string. The thing is, it doesn't sound like a blown speaker issue (and come on, the thing is brand new) as the horn is A-OK and I get a good fundamental sound ... there's just this other thing happening. Otherwise, there are a number of ambient rattles which I'm sure only can be diagnosed from checking the thing out. My drummer is going to mess with it on Tuesday while I play and try to find the root of the problem(s). I've been playing on small combos for so long that I'm not sure how much of this I should expect from a larger setup - which is to be used primarily for considerable power. Thoughts?