The 950 would do very well for 5.1 when paired up with a 755. There are some features on the 950 that you wouldn't use (Dolby EX, DTS ES, Cirrus Extra Surround), but those 6.1/7.1 processing modes have become standard on most all new pre/pros and receivers, so you'll end up not using them on anything you get (including the AVR-505 ). The combination of 950 and 755 will likely cost a bit less than the AVR-505 even with the need for five extra interconnects to hook the amp up ($2100 plus shipping and interconnects).

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