Boulder 2160 vs Dan D'Agostino S250MxV

if you are looking for great solid state also consider t+a

the t+a A3000 is a remarkable performer for a lot less then either of those amps

and you have an upgrade path by adding an s 3000 power supply you can further improve the amp and you can also go mono

Dave and Troy

Audio intellect nj

t+a dealers

Boulder and D'Agostino have fairly different goals in their sound character so I'd say it depends what you're looking for. Both are excellent options.

-nekoaudio I've heard people say D'Agostino have a more tube like sound, is this true?  

Given those two amps and speakers, in-home audition is a must! I wouldn’t buy blind or based on the opinions here. The dealer carrying these lines should be more than willing to facilitate home audition.