Yes, I do believe that power cords can give audible differences and also improvements, but I think some people exaggerate the importancy of power cords with regard to audio systems. You must not forget that in the 1960's and early 1970's "audiophiles" were listening to equipment that were using ordinary lampcords as power cords. Albeit this "lacking" of exotic power cords many systems sounded very good and musical. That is the most important thing: a system should sound musical. I don't give a damm to hyperdetail, "extended" reverberation tail of musical instruments and voices and ambience retrieval to the nth degree. What I want is music.
Chris
Chris