Ok, here's the deal. I have a Marantz SR7300 that is only being used as a pre/pro right now (Rotel RSP-1066 will soon take its place). I have a Rotel RMB-1075 (120wx5)powering my B&W 600series speakers (604's, 600's, LCR600) and I have a spare RB-1050 now doing nothing. Would it be possible or effective to bi-amp my mains with the 1075 AND 1050? I would have to split the unbalanced outs on the pre/pro and send it to both amps, then of course connect my speakers to both amps (already running 4-strand wire so no problems there, just add 2 bananas to it). Of if I used the Marantz's internal amp to power one set of speaker inputs and the Rotel to power the other...stretching the 4 speaker wires per channel and plugging them into both amps... Any thoughts on this?