Larry,
Thanks for the nice comments on the listening room. As far as the AA PX-25 goes. I can't think of anything that I don't like about it. I have compared it to a few different amps (BAT VK75se, Wytec Onyx, VAC, etc.) and the only one I may (emphesis on may)have preferred was the Nagra 845 amps.... They ended up being too noisy for my system though.
The PX-25 is VERY quiet, a little sweet, and has great resolution and extension. Believe it when they say, "it seems much more powerful than rated"..... Only thing I would change... I wish I could afford the mono version.
Chris
PS Joe Fratus (AA Owner) has got to be one of the best guy's in the audio industry.