toetapaudio: Previously I was using Shunyata Python CX power cords but a few months ago I tried a $695 Shunyata power cord on sale by The Cable Company with the same results. None could compare to the Audioquest NRG10's. Presenly I am using 2 NRG's on Martin/Logan SL3 speakers. I am using 4 NTG100's, which are almost as good as the NRG1000's, of which I am using one. I was fortunate to be able to purchase most of the Audioquest power cords from a dealer in Ft.Collins, who has to upgrade his own every time Audioquest upgrades their power cords. He is due o do hat soon as Audioquest is avout to come ou with their latest oferings any time now. I am also usng two Audioquest Nigara power strips, which replace an Ayre filter and a PS Audio regenerator. As Hert Reichert has found out, a Audioqust Niagara 1000 power strip is ery, very good for the money.