I agree with Goatwuss, it is almost certainly a speaker/room problem. A friend has the same speakers and amp as you and it is a superb combination - absolutely no brightness. What is your room like, how far are the speakers from the various room boundaries (walls) and where do you sit realitive to the speakers and back wall?
Reference 3A Decapo "i" sounds shrilly
I just bought a Reference 3a Decapo "i" version pair of speakers mounted on sound anchors speaker stands. I'm using a Antique sound lab ki22 fox dt integrated, Cary 306 cdp, siltech interconnects and Harmonic Tech pro speaker cables. The sound is shrill to the point of listener fatique and dissapointment. Is it my cables, the amp/speaker combo, the speakers? I'm confused and frustrated. Any suggestion?