Probably amps custom made by one of several tube specialists especially for the loudspeaker design, loudspeakers custom made by Von Schweikert specifically for the room they were to be situated in, digital front-end by Wadia (most likely), and turntable Simon Yorke I think.
Cables and power items all custom made by Verbatim (VSA custom cable division).
All installed in a room built by one of the top acoustic treatment specialists in the USA (house would be on the Nevada/California border between Reno and Sacramento).