The only "noise" I hafta deal w/besides frequent "Dad, turn it down..." is a low, unchanging volume level ground loop/buzz. I hear it only when I connect the DirecTV coax or HDMI. I've checked most of the house's outlets w/a "checker gizmo" from Lowe's - all good so far

I think it's a breaker panel ground issue as the coax is grounded outside to the house ground. I'm waiting for "Dad please fix the noise..." and Mom takes the kids to pool. Then I'll get busy w/my DMM.
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Samsung 60" LED
Outlaw Audio 976
Samsung BD player, Phillips CD chgr, Dish DVR, Firestick

Canare 14 ga - LCR tweeters inside; CC outside
BJC 10 ga - LCR mids*, inside & out
8 ga Powerline - LR woofers, inside & out

LR: Tri-amped Polk RTi A7
Rotel RB980s -> woofers; Rotel RB981s -> mids w/phase plugs & tweeters
CC: bi-amped Polk CSi A6 -> Rotel RB981
SWs: Sunfire & 4 Audio Pros - LFE True Sig; 4 Evidence - 1 @ ea corner
Surrounds: Rotel RB981 -> Polk RTi A3
Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman MP-20s