Another vote for the PrimaLuna. I got a One and it works quite well on some Dynaudio driver based speakers I have. At medium volume in a medium room it drove these 86db 6ohm speakers very well. Very musical and detailed - the bass was full but could have been a little tighter. In your case since you will be driving only Dyna's I would probably go for the Prologue Two - it should have a tighter bass because of the larger power tubes and other upgrades. Tube rolling in this amp is really very effective so you really can tune it easily.
