Originally Posted By: XenonMan
The balanced connections are mostly for noise rejection from external interference. I run the balanced connections to my 7500 but only because the cables were free and I didn't want to spent $$$ on interconnects which I think are usually more expensive than they are touted. I have both the 7125 and a 7500 and neither has an issue with interference. Good quality cable from BlueJeans cable will serve for either connection without killing your budget.

If, like me, one is planning to use Blue Jeans Cable interconnects, their balanced cable is actually just under 50% more than their high quality unbalanced cable ($71.50 vs. $48.50 for a 10 foot stereo pair). So in the overall context of an entire surround sound system, the extra outlay for selected runs of balanced cable shouldn't be too prohibitive.