The all conquering Zerostat

"Purchased in 1987 at Rogersound stereo in the SF Valley for $725."

dwellwer- I still have my RSL Speedscreens, from the Torrance store. I paid around the same amount. They were retired and mothballed in the mid 90's.

This old review was for the 2nd generation. My pair are the 1st, which had a conventional tweeter and cleaner looks IMO. Sonics I thought, werent dramatically different.

Sadly, In a few more years, RSL was done.

https://www.stereophile.com/content/rsl-speedscreen-ii-loudspeaker

Dweller-

Upscale Audio was RSL's  super hi end part of,their retail stores. I remember it was a dept within the store. 

I won't speak for Kevin, but he was a RSL employee and when he went and did his own thing, named it UA.