@bobheinatz -- the xa25 is a great amp, but here are a couple other Class-A amps you might want to consider. As far as tube amps, Don Sach's KT88 amp is getting some impressive reviews as well. Sorry if I'm just muddying the waters!
https://highend-electronics.com/products/valvet-e2
http://www.triaudio.com/s40.html
http://www.dsachsconsulting.com/custom%20kt88%20tube%20amp.html
https://highend-electronics.com/products/valvet-e2
http://www.triaudio.com/s40.html
http://www.dsachsconsulting.com/custom%20kt88%20tube%20amp.html