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

@mikhailark -

     I'm fairly certain; very little critical audio listening goes on in fighter planes.

     However: here's something that NASA selected, to conduct power, for their portable LASERs.

 

           https://homeaudio.analysis.plus/faq-items/letter-from-nasa/                            

 

@rodman99999 - this is exactly what I mean. There is little critical audio listening in the fighter plane, but i am sure quality cables are selected to deliver power in environment full of RF interference and when performance may literally mean life or death. They would perform well in a less hostile conditions :-)

 

New video -- 2 Power cords sound test

1) click 3:51. This opens YT window.

2) In YT, make a small YT window (narrow & tall, right half screen) to see the video screen and 2 time stamps (3:51, 9:37 in description) are in the same screen.

3) Listen at least 1 minute each and repeat.

Just relax and feel what comes to your ears when you click.

** Please visit my room (#272) at THE Show 2024, OC. Costa Mesa audio show on June 7-9. Alex/WTA

@mikhailark -

...selected to deliver power in environment full of RF interference and when performance may literally mean life or death. They would perform well in a less hostile conditions :-)

     No doubt: they're selected to dependably deliver DC voltages, under those conditions.

     Personally: power cables designed to conduct (perhaps: purify) AC voltages, or: ICs designed for the highly complex musical signals I enjoy, are my preference.

      When it comes to performance, in life and death situations; it's been my experience: firearms are much more dependable.       

      Out of curiosity: what brand of fighter jet cabling have you found to use in your system?

       How did you do your research, or: have you schooling in Avionics?

 

roxy1927 OP

119 posts

 

Well then Pass is a well known and admired popular brand in the audiophile world. I would like to know if others have used up market cords with Pass and found they did improve the sound.
 

I have owned the following Pass amps: X250.5, XA30.8, X260.8 mono blocks (my current amps). I’ve also experimented with several power cables. I heard the difference every time. The change isn’t always positive. But it’s there and is audible. 
I had Pass XP-12 preamp and now running XP-22. Power cords make a difference on these preamps as well. 
 

As a matter of fact, I’ve not yet owned a component that didn’t react to power cord changes.