Go to the McIntosh forum at audiokarma.org and do a search. A few guys have run 275's mono. I am using a MC275V with Cornwalls. Have used the MC352 as well. For my ears there is not a lot of difference between Mc tubes and Mc solid state. If money is not an issue buy the 501's. Another option to consider-keep the MC275 and buy a NOS MC352 or MC602 from Audio Classics at 1/3 to 1/2 of the price of 501's. That way you have both and can switch back and forth between tubes and solid state. Happy Hunting!
McIntosh MC275V monos versus MC501 monos?
I currently have a McIntosh C2300 and one MC275V. I would like opinions around major differences to be expected between running two MC275V in mono configurations versus selling my current MC275V and getting a pair of MC501 monos. I will be using these with a pair of Klipsch Cornwalls III, so I am not considering the 501's just for power. Up to now I have had a strong preference for tube amplifiers, but never tried a McIntosh solid state amp. No local dealers for McIntosh so I need to be certain which way I want to go. I wont get a chance to test these in advance. Thanks!