Since you didn't indicate what budget you have, I can suggest to you the following ss amps: McCormack DNA-0.5 or DNA-1.0, Classe CA-10 and Plinius SA-100II. These amps have enough muscle to drive almost any speakers out there and have a warm presentation AS WELL as being transparent/detailed. As for the brightness factor, it really boils down to one component or a combination of different things (as mentioned earlier). Although, some people have indicated that a room has as much play in bright-sounding systems as the components themselves, then again, if the whole synergy of the system is INHERENTLY bright, then room manipulation could only help so much.
