Why do you have to break in power cords? The issue of breaking in cables is quite controversial. I think whether a cable, be it an interlink, speakercable or powercord is good or not, could be heard within seconds/minutes. I think you don't need another breaking in period to get a cable sounding good. This is a general misconception. A cable is inherently bad or good sounding, regardless of being broken in or not!
