Doesn’t Odyssey recommend a really long break in time on their amps? I’m going by memory here, I thought I’d read that somewhere.
The manual states 6+ weeks with the amp remaining on the entire time for full break-in. It describes 4 distinct phases which the amp will go through.
Owners report good synergy with Maggies.
I have the Cyclops version of the Khartago (with extreme boards and upgraded ps) and ran it with MMG's for several years. Yes, there is a very nice synergy. Odyssey amps are higher current amps which, as well-reported, Maggies like and/or need. While the amp was powerful enough for my normal listening levels there were times I wished for a tad more. Adding a powered sub did alleviate much of that issue for me, fortunately. The sound quality of the Khartago is outstanding but if I were to do it again, I would opt for the more powerful Stratos to pair with Maggies.
Sorry @sunnyjim, I have no experience with the Vidar. Best of luck.