Power Cords

I used a Shunyata python on the Manley 250's. I also used harmonix. I never heard much of an improvement on the overall sound compared to the stock cord. Minor subtleties if your trying to hear something.

Try DCCA powercords,this will teach you what power
cords can do to your music, and your amp.

I think they do make a small difference, because stock power cords ARE REALLY crappy and do not provide consistent power. However, to those who think that it is the biggest upgrade in your system well that is simply not realistic or possible. A good power cord with hospital grade plugs will provide all the additional benefit you are going to get. In the case of an amp, it will provide slightly more power to the amp which allows you to reduce to the volume for the same sound pressure which allows the amp to be more effecient and sound better

I'm a little late coming to this thread, but I only just recently discovered Ridge Street Audio's Poiema 3 power cord. My feelings mirror those of Jaguar's in his comments above. In my system, not only did the soundfield open to encompass the entire area in and around my speakers and amps, but it seemed to come from BEHIND the back wall as well. Textures were also wonderfully musical and utterly natural sounding. I'm now headed for the Poiema 3 interconnect. And, yes, Robert is an exceptionally nice fellow to deal with.

Think I'm losing it lately. What I meant to say above is that the sound seemed to come from behind the wall where the speakers in front of me are located.