I'm considering a pair of M60s for dedicated stereo music in a 30'x20' room with cathedral ceilings. The room is divided (functionally) into two areas, each 15'x20'. One of these areas will be the listening area, and the speakers will be approx. 12' from the listening position. Volume levels will be low to moderate.

I'd like a power amp in the $200-$400 range to power the M60's and, occaisionally, some Bose outdoor speakers that came with the house. A/B speaker switching would therefore be a nice feature. I'd like to set up the amp and then forget about it, so a signal-sensing "auto-on" feature would also be nice.

I'm currently considering a used Adcom GFA-535 (conservatively rated at 60W/channel) and an Audiosource AmpTwo (http://www.audiosource.net/2003/03_amptwo.htm). The Adcom doesn't have an auto-on feature.

Any other amp recommendations?