Back to the original question, if you want to augment your Monster HT-800, you could always add a noisehound plugged into the outlet feeding your Monster, or into the Monster itself.
The current noisehound version is the BC 86 MK5 and it incorporates surge protection as well as filtering. They cost 140 ish, but if you have a system worth 3-6K, it's not really a large expense.
SC-05, HLT6189, Oppo BDP-93, Blue Circle Audio FX2 Axiom M2v3's, QS8v3's