Elsewhere on the forum is a couple of very interesting radio interviews with our own Lynn Olson. These are from the 70's and hosted by Harry Maynard. I just did a quick search & found 4 pgs of results for archived sessions of the show Men of Hi-Fi. There are many episodes relating to Quad. They all seem to be very interesting, asking some questions just as relevant today. I haven't had a chance to listen to these yet, excepting for Lynn's interviews. But I've got rain & thunderstorms all the rest of the week where I live; I know Ill have some time!