Warmer sounding Solid State

I would not say the Marantz is the end all sound that you want to achieve. There are much better sounding integrated amps out there that are warm sounding, like from Classe and Mcintosh which are excellent companies. There are also  natural sounding integrated amps from Hegel that sound just right. You might want to look at a nice tube integrated that has enough power to drive your speakers, like the rogue Cronus magnum with the kt120 tubes. Or you might want to look at the new sprout100 from ps audio for $599.
i have owned or still own all of these products mentioned above and I have enjoyed/or still enjoy them.

Almost any Pass Labs  integrated amp will solve your problem.
About the best SS you can get with moving to tubes.

Clayton Audio,  which run class A and leans toward the warmish "organic" side...

Surprised no one has mentioned the Hegal Amps  or Krell. I have a Hegal H160 and have tested the Parasound Halo Integrated (did side by side comparison for one week) and to my ears and that of some experts - the Hegal won; https://www.soundstageaccess.com/index.php/equipment-reviews/691-parasound-halo-integrated-dac-integ... 

The Hegel 160 was stated in your link as having a somewhat forward sound.  This would be the wrong characteristic for someone looking for a warm sound.