Whatever happened to these brands?

Browsing thru my old Stereophile issues i came across a number of manufacturers that somehow quetly dissapeared from my radar screen:Deltec Precision Audio,Scientific Fidelity,NRG Control,RAM Labs and does anybody remember a CD player clamp?
I've never heard of those brands!
I believe DPA is still in business.
I know that RAM is still around- stands for Roger A. Modjeski (sp)- a truly remarkable designer/engineer.
Roger Modjeski is indeed still in business, selling RAM Labs tubes and Music Reference tubed equipment, from http://www.tubeaudiostore.com/index.html .
The guy from NRG was so abrasive that I think he drove all the business away!
Scientific Fidelty was Mike Maloney and I believe he still works in the Biz.

If you can find me a pair of the Sci Fi Crown Joule 24k monitor speakers, Id be a very happy man