You absolutely need to stay away from Spectral gear. My best friend had a full Spectral set up and it was a nightmare of unreliability, and expensive service. It interfaces poorly with other equipment. It was so bad he traded it for a full McIntosh set up sonically a step backwards but way forwards in reliability. He has yet to require any service. I hear nothing but good things about Ayre equipment. Stick with them. Pass and ARC are other well proven brands. IMHO none of them make an amp as good as the Parasound JC1+. It will pair with anything and it is a thrilling amp to hear, effortlessly powerful but as delicately detailed as any amp and they will drive anything. I have heard $100K amps that are not as good. At $18K they are the bargain of the century. John Curl knows what he is doing. The Atma-sphere MA2 is another but more expensive proposition.