In another thread I asked how to run two subs from one sub-out on my receiver. The answer was to use an adapter. Can I do this safely (& effectively) for the main front channels to allow me to Bi-Amp? LEFT & RIGHT Front with adapter into 2 external Amp channels each? If so, what would be the best adapter solution to use? Does anyone make reasonably high end 1 into 2 phono interconnects? Thanks for any help/advice, Mark.