Amp/preamp combo for B&W Matrix 801's

What about the Plinius line?

I have the 801s VII and use Krell FPB 250 monoblocks and Krell LRCHR preamp with the Krell crossover units with outstanding sound. The croossovers realy make a big difference in sound.

i use them biamped.eagle 2 for the bottom and 2 mc 275 commemorative bridged for the top.
also use a maughan box and happy as a clam.
they are hard to drive with a tube amp running full range although big arc amps do the job decently well.
bass is much tighter with ss amp on the bottom however.

Thanks again for the good advice...