A note based ont he comment of Dynamic "pre internet"...
There are two Dynamics:
One is Dynamic in North Branford, CT - that's the old one that Frank Lupo started many many years ago. He sold it years ago but they still use his name (and TCT convertors).
The other one is Frank Lupo's Dynamic Convertor in MD. Lupo's is the one that most refer to (with Shawn).