OK, I hooked up the Ramsey SHA 1 headphone amp to the preamp via the line level tape loop output, and..........it worked!!! (once I figured out that I hadn't turned the headphone amp on and THAT was why at first it sounded so faint and distorted, then I turned it on and voila.....what a ditz).
Anyway, now the Ramsey SHA 1 doesn't sound anywhere NEAR as good as it used to. I think a new thread is warranted to ask what headphone amp to buy. Or is it better to just go over to head fi and snoop around their threads????