I recommend you take a look at Odyssey Audio amplifiers. I have been running a pair of Kismet mono-blocs (in lower cost cases) to power my Fyne F-702 speakers and have been very, very pleased with the sound I am getting with the combination of a tube preamp (Rogue RP-9) and solid state power amps. Klaus at Odyssey can customize amps for you with various upgrades. My only caution is that it might take a few weeks for him to get them built ... but the results are stunning.
I want to vertically bi-amp my speakers, and I thought about selling them and getting something else, but they sound so VERY good that I am having Klaus convert them to stereo and upgrade the power supplies. (And I tried two other amplifiers, one tube, one solid state, before discovering the Odyssey Kismet amps. The Kismets outperformed both.