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
invalid ----- @bimmerlover I have to question the thinking that it’s the last 5 feet, the equipment draws the current, so it’s the first 5 feet.

I’m with invalid. In my experience, a last 5ft power cord is much more important than in-wall wiring. Like a garden water hose, the nozzle only sees what it’s connected.

The audio equipment draws the current from a power cord which is a bigger reservoir than in-wall wiring. *Usually, the audio gear doesn’t use 100% of current. **Drawing current/water from a bigger hose is faster than drawing from a smaller diameter hose (in-wall wire).

In-wall and dedicate lines influence the sound but are less impact to the sound than power cords. Alex/WTA

Nope not click bait. The used Shunyata Sigma v2 NR I bought is for my ARC pre. Even used the Sigma is not cheap.  But I liked the improvement. I don't know why that would have been deleted.  I'm one of those I know what I like people. I'm not an engineer so graphs are useless to me. So here goes. I went from the $500 cord to the highly praised AU24 SX for my Pass 250.8 directly into the wall outlet. With the Shunyata I heard a difference immediately but that was obviously broken in already.

I’m with invalid. In my experience, a last 5ft power cord is much more important than in-wall wiring. Like a garden water hose, the nozzle only sees what it’s connected.

I am not arguing about electricity because I don't know much about that subject, but as far as water coming out of a garden hose to a nozzle, if all the plumbing in the house is ancient and gunked up, it will have a detrimental effect on the water pressure at the nozzle connected to the garden hose.  I can tell you that from experience.

@roxy54 I have a 250.8 and an ARC REF 6.  I noticed a significant audible difference going from stock ARC to a Shunyata Alpha v2.  On the other hand, the difference between the Pass stock cord and another Shunyata was audibly better, but not nearly as significant as on the ARC.  But as they say, “everything matters.” So speakers, DAC, other cables all have some effect on how each component sounds.  I used an Audience Au24 on the Pass and then put in a Shunyata and honestly didn’t hear much of a difference.  But I was going for a full Shunyata loom, so I was ok with what seemed to be a minor improvment.

@mihorn Your comment “In my experience, a last 5ft power cord is much more important than in-wall wiring. Like a garden water hose, the nozzle only sees what it’s connected. The audio equipment draws the current from a power cord which is a bigger reservoir than in-wall wiring.” defies all logic and physics. 

You seriously think that your “high-end” 5 foot long power cord is a “reservoir” for energy/electrons/electricity?