Power cord upgrade

Try a WireWorld Silver Electra on your streamer, they are well liked for that purpose.

I just received a Puritan PSM156 last week and have been breaking it in with the Classic+ cord that came with it. I know the Puritans take about two weeks to break in, but after five days of painful listening with terrible, etched highs, I had to swap out the cord for 20A Shunyata I had laying around.  This quickly resolved that problem though it will not be my final cord for that unit. I suspect that the Classic cords are not shielded and that was the issue. So, yes, I would agree that the cord may be holding you back. I was planning on getting their ultimate cord, but now I am a little concerned that I might have the same experience. 

@mclinnguy Interesting. I just removed the ultimate cord and inserted the classic back into the PSM156 because I thought this comment was quite odd. I certainly don’t get any etched highs, if anything it is smoother and easier to listen to than the ultimate. Less resolved, less detail, less refined and not as nice sounding, but not terrible by any means. The worst part of the classic and the part I noticed the most was the bass was bloomy and very much uncontrolled with the classic vs. the ultimate. But I suppose the Shunyata is that much smoother by comparison? Which Shunyata cord is it?

Yes, it was definitely surprising that the Classic+ seemed to be the source of my issues. Substituting the Shunyata (it is just a Venom model) changed everything. I still plan to replace the Shunyata, as I think it is limiting. The only other time I had to remove a power cord from my system was when I used an unshielded cord on my amp and had similar results. I have no explanation for this phenomena, but it is pretty apparent and seems to be addressed with shielding.

@megabyte Voodoo cables Vision. 8 gauge OCC copper

This caught my eye, as I have had good luck with OCC copper cables. I could not find any reference to OCC for the Vision cables. That would be a good price if they were OCC, did I miss something?

@mclinnguy Thanks, Audio Sensibility is on my list.Very fair prices and it looks like decent gear. 

@megabyte No problem, there are so many choices it is easy to mix up the specs. 
 

I have never noticed much difference with power cables until I tried this Shunyata on my Furman PFi 20, and the Puritan that replaced it. A profound difference, not all better, in sound. Just for fun I might build a new one using Neotech OCC gear. 

Thanks @audphile1 , you just saved me the time. If you can't hear the difference, you need a better system, or better ears. The only point I can agree on with the naysayers is that science cannot yet explain it.