Another GaN smaller integrated, Technics SU-G30 has everything bar the kitchen sink.

Not quite 'all'. It lacks balanced inputs

Not quite ’all’

... nor any semblance of customer service capability, even at the most basic level, in the usa

complicated all in one unit like this... something goes bad, you are down a river with no paddle...

Only 1 line input kills it for me, wouldn’t consider for that reason alone

I actually have this model and have been using it as my main source of amplification while waiting for a new amplifier to arrive (one of my JC-1s broke).  I think it is quite a good value used (about $2K) since you can just plug in a digital source and don't need an external dac.  

There is one huge caveat IMHO with Technics implementation of this technology in my experience with the SU-G30.  The analog input is digitized, and that conversion adds a significant digital flavor to the sound coming out of the speakers compared to a pure analog setup (in my case BHK pre and JC-1 amps).