amplifiers for sonus faber concerto domus ?

I heard these speakers at my dealer's with the PrimaLuna Dialogue 2 - they have a very sweet, laid-back presentation. Gorgeous sounding, well-made speakers, but not quite to my personal taste. The Dialogue 2 drove them fine, though you might want to try a tube amp with a little more power, such as the Rogues.

I would not go tubes with these. They are laid back in the highs and need some pretty good power to take hold of the woofers and get more bass definition. I heard them sound great with spectron musician II. Pass or plinius should work great too.