Power cord to add ease and tame treble.

JMCgrogan. I have not tried the golden ref speaker cables. How do they sound?

There is nothing betw the speakers. There is a fireplace and i am not allowed (family) to put cloth on the front wall.

What constitue proper AC filtration?

Thanks guys. Special Stehno & bigkidz.

Bigkidz, I will definitely try your method. Not much to lose.

They (Cardas Golden Reference) add ease and tame treble. I just mentioned it because it seems that's what you're looking for a power cord to do.
I do agree with the others that dedicated lines are a good place to start. This added a blacker background, improved imaging and solidified bass in my system.

You guys are absolutely right. With the PS audio P300, i'm right where i want it ( at least for now ).

Why does dirty AC affect the treble more than other frequencies?

try omiga audio http://www.omigaaudio.co.uk/. i was using nordost power cords (a mix of shiva and vishnu) and had a rather "obvious" trebble. i home demoed the omiga's and they cured the trebble, making it very natural and smooth, whilst seemingly adding an octave to the bass and increasing the detail levels, and to top it all off, they added an amazing sense of presense to the sound. a real "you are there" kind of feeling. perhaps the biggest step my system has taken. tony the proprietor is also a top guy. i have no conection to the company other than being a very happy customer!