Dear respondents,
Dev - thanks for the advice, I will follow up, but not sure if the CAT has enough drive to give the speakers the needed "song and dance" capability. Which my more powerful s-state amp gives even if it isn't tubes.
Robtym - it looks like your 52SE's dip down to 5 ohm in the 20-200 herz region, while my Consequences go down to 3.6 ohm. So a 100-200 watts amp may be enough, in your case (just guessing, i am no expert in this). To my amazement (thinking Dynaudio = difficult load), I recently heard a small Cayin tube amp drive a pair of Dynaudio 140 monitors to great effect, the sound was all over the place, speakers disappearing (a very well-damped room, though).
Since no-one, so far, has come up with a solution based on experience of a good tube amp driving the Dynaudio Consequence speakers, and I like their sound, I am trying various other things (damping, footers, cables).
Oystein