I heard Harbeth speakers for the first time at Axpona in 2019. They were set up in one of the standard hotel rooms, and they flat out COMMANDED the room. I would say they were in the top five rooms I heard all day. It wasn't a particular characteristic, they just sounded incredible. They sounded so big in the room, and they just disappeared. Some rooms with much more expensive gear didn't even come close.
Go listen!
-Geoff