Dear Conrad,
It is an honor to meet you in cyberspace. Thanks for the praise. I owned two 200S amps and later owned the horn tops with the lenses so that's how I knew about them. I first saw Sunn amps on my first trip to the Fillmore East in 1970 at the age of 16. The opening band for the Grateful Dead was called Cold Blood and the bass player had two 2000S amps. Then Lesh followed with four or five 200S cabs (he used Fender heads, guess he didn't like the 200S). From that moment on, I had to have one. I went to Rondo Music in Union NJ, a big Sunn dealer and bought (well my Mom did) my first of many Sunn products over the years, a 200S with the JBL D140F's. Rondo had the PA there too. As has been said here before, the best sounding bass amps ever made! Thanks.