Amp suggestions needed

I would consider those b&k m200 sonata monoblocks with mods;
should drive without a problem and be on the warm side;this has been by experience driving merlin 4b+'s with these amps.

Stanwal, you are probably right. But I did have a freiend that used a set of DNA-1s to drive his Divas. Worked great.

I have also heard good things about the H2O amps w/ APogee full rnage speakers, but I have never seen or heard one in person.

I second the 8008BB.A friend drove Duetta Signatures to glorious heights with a big old Jeff Roland class A amp a few years back.

Any thoughts on the old Krell KSA 100?

Yes, don't. I was one of the original Krell dealers, never used them with the Apogees, different time frame. Good for its time but obsolete now and costs a fortune to repair. A friend who does my repair work has been given at least one older Krell because they cost so much to recap. But get it in preference to the KMA 100s, sounded better and didn't blow up, as my 100s did twice.