Jeff Rowlands Amp and Dac vs. VAC amp and DAC

Thanks so much Al. I got it!! 

Do you think I should try the ARC reference 150 with the Aeris? Or the Air Tight tube amp? Or am I going in too many directions?

ARC, Mac and Airtight will all work with Sabrinas and they will all sound completely different. The Mac--warm, rounded, rich but slightly veiled in comparison to ARC which will be more transparent, open and expansive, but not strident. I have owned both with Wilsons and these are my conclusions. Airtight is an excellent company whose amps I have enjoyed listening to but never with Wilsons. Good luck.

Based on what Al has written it seems that the ARC  tube amplifiers may utilize a larger degree of negative feedback  (NFB) than the VAC amplifiers.  I say this due to the lower output impedance  (higher damping factor ) of the ARCs. Depending on the particular speakers this can be advantageous.  It truly is dependent on the speaker design and intent of the builder. The Sabrinas could require amplifiers with more NFB with the resultant lower output impedance. Again,  nothing substitutes for actual listening experiences. 
Charles, 

I concur with GPGR4Blu... "ARC which will be more transparent, open and expansive, but not strident."

In my experience at RMAF for several years, ARC amps have been consistently my favorite amps, together with Rowland and Solution. They all meet my sound/musical concept.

Unfortunately, high power tubed amps like ARC require upkeep to maintain top notch performance -- tubes sag over time. I personally prefer to have "launch & forget" devices in my home.

G.