I know I'm getting off topic even more but after discovering this site I've started looking at everything Phase Linear. One thing strikes me funny while reading on other Forums, some saying just how terrible the 400 Series 1 was but then a quick check on E-Bay tells me that in general, my almost 50 year old amps cost more now than I paid way back when! Even for one's not functioning!
I know, not a great comparison seeing that any new amp is 4 to 5 times the cost and for sure, the Phase 400 at +/- 400.00 in the very early seventies was still a lot of money in my teens When making 2.50 an hour at the grocery store.