Thanks for the info.
Got them home, and wired up to the Yamaha RX-A2060. Set up to be bi-wired, but included some heavy jumpers. Just using the jumpers for now, with a single cable.
So far at reasonable volumes, they sound incredible. The bass is somehow fast, and deep at the same time. Tweeters fairly detailed, and don't seem to be fatiguing at all.
I need to play around with positioning a little before I can comment fully on the soundstage, but it also seems to be surprisingly good for this type of speaker. Impressed.
Zero badging anywhere.