That upper midrange hash is the most difficult element to eliminate, IMO. I have tried a snake charmer's basket full of power cords in every price range...including the Signal Cable. In my system, I have only found one power cord that does not produce hash in the upper mids while maintaining HF extension, and that is the Purist Audio Dominus Fluid or Ferrox. This is not to say other cords don't exist that are smooth in the highs, but those that I have heard also rolled off the treble extension. The Dominus cords don't do this. They are expensive, even used, but once you bite the bullet and try one, you may find the level of your CD player rises to a level you didn't expect. A positive aspect of buying used Purist Audio cabling is that it holds its value reasonably well, so your chance of re-selling with a minimal loss is good. As an option to the Dominus, there are some Aqueous Anniversary power cords available now that appear to be great values. I have not heard the Aqueous power cords, but some audiophiles claim they are even better than the Dominus cords.
Again, there may be other power cords out there that will get you where you want to be. I know that everyone who I know who has tried a Purist Audio cord has never regretted the decision.
Again, there may be other power cords out there that will get you where you want to be. I know that everyone who I know who has tried a Purist Audio cord has never regretted the decision.

