New expensive power cord for amp and no change in sound?


I bought new an expensive(for me) well known and reviewed power cord for my very good amp and plugged it directly onto the wall socket. After a couple of weeks of daily use I hear no change in the sound quality from a $500 cord. I don’t want to name it for fear of getting my thread deleted. You would know it or at least be aware of the company. Did I throw away several thousand dollars? Before I get the snake oil answer I want to let you know that I bought an upgraded cord for my pre as suggested by the pre’s manufacturer and am pleased with the results.

I guess for full disclosure the amp’s manufacturer said don’t bother. But I had had good luck with the pre so I thought it would be a good idea.

Anybody else have this happen to them?

roxy1927

And some times leaning on I told you so will start another cable war leading to deletion lol. But I told you SO…. Placebo, in this case that didn’t even work !! 
 

Cheers 

I tried and absolutely did not like Shunyata Alpha NR v2 on pass amp.

@audphile1  , I don't have a Pass and that power cord is out of my league, but from your statement above, I assume that you did hear a difference?  What was it that you heard that you did not like?

Everything matters! Is it cliche? Yes, but true  A dedicated line or 2(preferable) with upgraded receptacle(s) are a must to set the foundation. I don't want to comment on specific brands but if not able to have a full loom(Ic's/Speaker cable/Pc's) Keep the same brand of Ic's and all Pc's should be from the same company.

I don't notice anything specific as sounding different from the two video time marks. What do you hear? Have you tried measuring the difference? I guess it's just me but that's what I'd do because I'm a curious dude. Every time I've been pretty sure I was hearing something, I found I could measure it and come to a better understanding of precisely what I was perceiving. Usually it shows up mainly a subtle shift in frequency response. Not being familiar with that song or your room I'm not picking up on anything. 

@immatthewj extremely bright and fatiguing. I couldn’t tolerate normal volume for more than few songs. My system is smooth and non fatiguing and I can listen for hours. But not with the Alpha NR v2. I had two if these at some point, one on Pass XP-22 preamp and one on Pass XA-30.8 amp and the amp just turned unlistenable. I gave it a full 200hrs and sent it back to Music Direct. I used to own older Taipan and Python Alpha Helix cords and they were open sounding but never bright.
So like I said, not every upgrade brings positive results.

 

And…no placebo here. I’ve gone thru enough power cables, cheap and expensive , with both good and bad results to know these cables matter. Take it for what it’s worth. My experience. My ears.