Join Date: May 2002
Location: Bellevue, WA, USA
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The NR818 is unable to pass through a 4K HDMI signal (although it can upconvert to 4K, go figure).
So theoretically if you get some 4K equipment in a few years and you have a NR727 then it will all work together. The NR818 won't.
Other than that the NR818 is a better unit overall.