Well, I finally got my PR-SC886 installed in my system. It sounds pretty good and I have not run Audyssey yet. Had to get sub splitter from R-shack to hook up both subs to the output.Still tryin to figure out the inputs and what sounds best as an output. It doesn't seem to have a 2.1 upsample mode like the 990 although "stereo" comes pretty close. From what I have heard so far its is very quiet and no hum even after moving all the cables around.
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner