12-06-13: Mceljo
Jmcgrogan2 - In theory, if the goal of audio equipment is to reproduce the original signal as close to the original as is possible then it would be expected that as the various pieces of equipment get better and better the resulting sound should become more and more the same among different pieces of gear. A well designed pieces of gear where no expense was spared should have less room for improvement than a middle of the road piece of gear would.
Whatever dude, however your engineering, scientific mind wants to rationalize it. I just know through my experiences, that lower priced, less resolving gear has a more difficult time exposing differences in tweaks (cables, cords, etc.), than higher priced, higher resolution gear. As with all things in this hobby though, YMMV.
It sounds as if you are looking for reasons NOT to try a power cord. I would say by all means then, don't try them. If you like what you have now, don't tread any further. Just listen to the music and be happy. Many folks wish that they HADN'T heard differences. LOL! This hobby is MUCH cheaper if you do not hear differences, or better yet, you don't even attempt to hear differences. LOL!!