I just switched from a one meter Harmonic Technology Pro-11 AC power cord to a two meter H.T. Pro-11 AC, and guess what? I installed it late last night, and let it run all night to begin the break-in process. In the first 2 minutes it was apparent that this cable was much better. There was a sense of the room ambience present, more weight in the bass, higher output, and a general feeling of lively energy. Admittedly these aspects could be called "subtleties" that some people may not notice, but for those who have the experience to hear the differences they are significant. . I am satisfied that the effort I made to change to Harmonic Technology cables was worth it, and now enjoy the pride of ownership I hoped to find. Can't wait for it to fully break in. Thanks guys.