5/6 channel amp with laidback,soft, smooth trebble

Anyone recommend a 5 channel amp that is going to be more forgiving of a foreward/bright trebble from the speakers?
My setup I'm tinkering with isn't cutting it for balance! My trebble is too foreward,bright,and in your face.
I'm looking for an amp that will help me.
Actually, the speakers I'm using do superb with tubes. But that's out of the question for my 5 channel home theater set up. any suggestions?
I've heard/read that maybe the Rotel 985 or similar might have a more recessed trebble, which might help. Anyone have any experience here? thx..I'm open to suggestions..however the speakers will likely have to stay.