Stereo or monoblocks

Two amplifiers that I own (both excellent) are dual mono

EVS 1200 (TweakAudio)

Voyager GaN 350 LSA

Im pretty sure there are others

Especially if you have speakers of less than 8 Ohms, speaker cables can be critical- monoblocks allow the speaker cables to be shorter, thus reducing the artifact they might impose. If the monoblocks have balanced inputs, this can allow the interconnect cables to have no 'sound' of their own as well.

The power supplies of the amps are obviously not shared so the power for the amp will be cleaner. This can allow the amplifier lower IMD which is audible. Because there can be less current limitation to the power supply bass impact can be improved.

I recently went to a pair of Mc611's with a c49 after trying many different stereo combinations. I wish I would have tried mac a long time ago. Speakers are Kef Blades.

Thanks for all the advice guys.

Those are nice speakers and Power amp. 400 a side will do fine The mac is a great brand.

Compression driver means efficiency and Jbl dual woofer want current

he mac should provide well.

Crazy enough Crown Comtech units are cheap and would provide very cost effective power  in mono blocks.