Thank for all the responses so far. I am actually contemplating on adding a medium power tube amp for my jazz, instrumental and chamber type of music listening. It is very difficult to find a tube amp that is powerful enough and with a reasonable price tag for rock and large scale symphonic music. My listening room is about 400 sq ft and I like to listening with relatively high volume.
Siddh, I am wondering how bad the ARC VT200 will sound. It is actually in my short list of stereo amp to consider. A used CAT JL2 is a good idea. VTL450 is also one of my favorite. Although the MA-2 should be good choice, it is out of my budget and difficult to find in used market.
If there is any other good ideas even with mono block, I would like to know.