PS Audio Prelude power cord.

This cord is too weird. At first, right out of the box, no break in, it sounded very detailed in the highs as well as midrange with nice low end extension. I let it play for about 30 hours, periodically listenning to music. And now, I think the break in period is over, according to PS Audio, 20-40 hours, I am beginning to notice rolled off highs. Detail in the modrange and trebble almost non-existent. Bass remains deep and tight however. Example, I was listenning to Brubeck's Take Five, where during the drum solo bass strings vibrate against the fret. I remember the sound of strings vibrating being much more defined and detailed, but now I have to lesten for it to notice it. Hmmm. i liked what it did for the bass, but it did so at the expense of the rest of the spectrum. I don't think I am ready to cope with that. I would appreciate the advice on a good power cord for the amplifier where it would make the bass deeper, tighter and more defined, but leave the rest of the frequency spectrum untouched. Thank for your replies.

Thanks Paul. I did try to plug back the stock cord. The highs did return to some degree, but the improvement in the bass that was brought in by Prelude cord was lost.
I may return it and swap it for Shunyata...either Diamondback or Copperhead. I want my system to sound open and I know it can with the gear I have. I would appreciate if you can let me know your findings on the PS Audio PCs. Thanks again.

I called the place I purchased the cable from, Music Direct. They are going to exchange it for me to any cable I want. I will loose money on S&H only. PS Audio claims their line of XStream power cords function as mini power conditioner themselves, so I was thinking to try it on the CD player before I send it back, but suspecting it will have similar effect on it as it did on the amp. Will see, but most likely I will send it back and get the Copperhead cord instead.

I pluged the Prelude cord into my CD player and there was an improvement in noise reduction and detail. I think, due to the large amount of shielding the PS Audio Prelude cord has, that it is more suitable for a digital component. I will try to get the power cord for the amp and then see how it goes before I return it. It's a well made cable. I got to give it that.

it's pretty scary how tight that iec plug is on the Prelude, isn't it. This cord made my amp sound darker than I like it to. I ended up sending this cord back and got an Audience cord here on a-gon. I'm very happy with it. Made a pretty big difference on the McCormack DNA-125 amp. I will buy another one for my ARC LS15 preamp.

If you like the way this cord made your amplifier sound, that's good. That's why it's best to buy from a place where they offer home audition. Also, I don't think SMC would use this cord when tuning your amp. They explicitly say they don't want you sending PCs with amps. They have their own reference cords and that's what they use with your amp when they do revisions. Think about it, you get the amp tuned with this cord, then 2 months later you upgrade this cord to say Shunyata Taipan, which will probably make this amplifier sound totally different. And in this case you won't be happy, because all of a sudden your amp sounds wrong. I think that's the reason SMC don't want you sending them power cords. But may be I'm wrong....

Steve's a great guy. I am sure he know what a lot of different speakers sound like. I heard DNA-125 modded by Steve and it is a great sounding amp. I am thinking to send my DNA-125 for revision + transformer at some point.