I had that Adcom and Denon tt many years. The Denon is excellent when working properly, but mine had issues with auto features.. That particular Adcom pre is not their best product, with others in their line up being much better. Still all-in-all it was a good step up from run of the mill receivers.
I don't find the MA Silver 6 speakers bright at all. When I think of bright I think of the highs being tilted up. I find the Silver series clear and articulate though the entire frequency range, very nice detailed w/ tight tuneful bass and expansive soundstage.