Has anyone used an Audio Research Ref 150 with a pair of 5As? I am wondering if the amp has enough power to drive them appropriately.
I don't know if you have already made a decision, but I use the ARC Ref. 150 with my 5As currently.
I landed on the Ref. 150 after trying varying models of Parasound, McIntosh, Mark Levinson, the ARC Ref. 110, and the ARC DS450.
The Levinson and the DS450 had better mid bass punch, but the overall musicality of the ARC 150 is tough to beat...