As a dealer I'll refrain from comment but you might want to check out this site for additional feedback on the Butler amp that SST told you about. I am the dealer that he referred you to regarding the amp.
http://www.audiocircle.com/circles/viewtopic.php?t=17091&highlight=butler+2250
Joe
http://www.audiocircle.com/circles/viewtopic.php?t=17091&highlight=butler+2250
Joe