Ayon, Audiomat (I'm slightly biased owner of Audiomat), Audio Research and Octave. I owned or listened extensively those. Chose model appropriate for your speakers and room, with which I am not familiar with.
Lampizator Atlantic (well, anything from them) is one of the best out there. Very quiet. High sensitivity speakers still need some power to keep the system as quiet. It would be a mortal sin to ruin that quietness of your DAC. Class A vs AB vs hybD, SET vs PP or integrated vs pre/power combo - all that pales in comparison of importance to match amp's output to your speakers, and your source to the preamp/integrated input.
It appears you have a good info from speaker manufacturer; why don't you ask Lampizator people?
