Back on track, any ideas on eliminating the buzz in my speakers since I introduced Direct TV. I watched the installer do a top notch job grounding everything to the exterior ground rod that was already existing to our electrical house connection?

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85