I had a bit more luck in my research.
Bits of info here and there indicate that neither of these brands qualify: Classe, Denon, Outlaw Audio, NAD, Rotel, Yamaha.
OTOH, I remembered the name Emotiva from when I was researching power amps last year. AV123 sold this brand then. They no longer do so but Emotiva's web home can be found easily enough. All of their stuff appears to be dual voltage.
I searched this board for related information and came up mostly blank. IWalker bought the LMC-1; I cannot find a follow up, though. Socialxray wrote that Emotiva's high-end models are based on Sunfire designs.
So now I am off researching Emotivas. Does anyone here have any experience with that brand?