Man you guys really get into it. Its great. I'm an M.D. so my knowledge of electronic design and theory is quite limited. I'll have to read it all again a few times to even begin to understand all that's been said. But in medicine and all science, empiric evidence trumps all. So here's what I found empirically. When I hooked up a balanced Aragon Aurum pre amp to the Palladiums, I couldn't turn the volume to half before my Martin Logans were so loud, it hurt. With the Stage One's gain at max (there's a gain control in the advanced settings), and the volume at max, the speakers were loud,(sort of), but nowhere near as loud or impressive as when the balanced Aurum was hooked up.So I'd have to conclude that the amps were, indeed, being hobbled by the RCA to XLR conversion.
That being said, anyone want to buy a slightly used Stage One, cheap?