Since my previous post (my mistake by the way - that was the Music Hall 25.2 series I purchased) I have learned, just as you mentioned, regarding Mark Levinson and other manufacturers buying 'off the shelf' items and passing them off as their own. The $1200 dollar price tag is what bothers me most though (especially considering these beasts weigh roughly 70 lbs). The internal photos of the 6Vi are incredible with the dual-mono circuit layout looking superior to even a Bryston 3B with otherwise matching specs. Nevertheless, I have only read good reviews on the sound quality. It turns out these Chinese amps are OEM and their names can be changed & specs even modestly modified by those who sell them under a different name. I googled Red Rose () and found two amps that look identical to the DS-99 & 6Vi, only they called them the Passion & Affirmation, respectively.
I read there was some kind of controversy between Dussun & Red Rose (Mark Levinson Group) but can't really provide any details about that.