Thanks to all for the recommendations. On a couple of points. 1. I have a new Emotive Audio Sira all tube preamp that will never leave my system. Fred built it for me and it's probably the only bespoke piece of audio gear that I will ever own. It sounds significantly smoother, bigger and more defined than my Audible Illusions that it replaced. 2. I am curious if anyone can give comparisons between the aforementioned components? I have heard the mc275 as a single powering a set of Wilson Sofias. It was nice, but I am not a huge Wilson fan. It was hard to determine the sq and signature of the Mcintosh b/c of the flavor of the Wilsons. I have never had a chance to hear any Rogue gear. 3. I had considered the Zeus seriously, but is the sq better than the 180's? 200lbs+ for an amplifier sounds great until I am having the hernia repaired!
Lastly, I had forgotten about Quicksilver. I also wondered about an ARC VS115. I am open to all choices. When I make a purchase I want to make sure that the amp/s can handle harder to drive moderate sensitivity speakers. My current Gallo Ref3.5 sound great with the SixPacs, but I wonder what doubling the power would do. David Janszen expressed some concern that I would be underpowered for the ZA2.1 electrostatics which are being delivered tomorrow.
Fwiw my current room is relatively small at 13x15, but it may not be the final room where the system resides. I also lean more towards warmer sounding gear. The hyper detailed Krell, etc is not my cup of tea. The flavor of a slightly warm tint is what brought the Mcintosh into the fray. I only fear that I seem to recall a lot of negative feedback being run in the MC275. My experience with the SixPacs is that I run zero negative feedback. The 10db negative feedback switch on the SixPacs kills the soundstage and imaging. No thanks.
