what amplification are you running with your Dynaudio Heritage Specials?

Thank you @bluethinker. Very helpful reply and good insights. 

The STR is tough to beat in that price range with their built in room correction, its an uber handy tool.

I've used my HS's with a Luxman 550axMarkII, a Luxman LX-380 integrated tube amp, the Cronus Magnum III and a Musical Fidelity 6si. To my tastes the 550 and the MF6si sound fantastic although the LX-380 is close. I sold the CMIII and just acquired an Audio Research i50 which I plan on trying after some air time with the Devore Super Nines.