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

"If power cords really made a big difference wouldn't component manufacturers be putting better stock cords on? "

- I am not sure many say they make a "big difference" and component builders are well aware of the aftermarket cable industry. Knowing that, the manufacturer's are only supplying stock cords as every customer might prefer to choose their own preferred brand & model. Plus, they would only pass on the added cost to the customer and they are saving money by including only a stock cord.

Bottom line: If you try it and you don't hear a difference, good for you. If you try it and hear a difference, good for you. No two systems are the same, no two people hear the same. There is no right or wrong. Kinda sucks for the "snake oil" crowd ...

"I hear no change in the sound quality from a $500 cord"

"Did I throw away several thousand dollars?"

How does one throw away several thousands on a $500 cord? 

@tony1954  , I was wondering the same thing, but I am thinking that maybe OP had a $500 power cord on it and then upgraded to a more expensive one that cost several thousand?

If power cords really made a big difference wouldn't component manufacturers be putting better stock cords on?  Are there any component manufacturers that put anything other than standard plastic covered cords in the box?  

@jon5f52  , this might be an apples to oranges comparison, but not way long ago someone asked the same thing about tubes--to paraphrase, "Why don't manufacturers send out their stuff with high dollar tubes?"  And almost everyone will concede that different tubes do sound different.  So I'd almost think that instead of sending an amp out with a real expensive power cord to add to the msrp, they let the consumer pick & choose how much $ to spend to tailor his or her sound to his or her liking.

If you deem a $500 power cord , it's pretty safe to say your system is fairly entry level

It's safe to say you have a warped sense of priorities.

@immatthewj To me that bumps up against the problem of why does different have to cost so much.  I understand people like to switch tubes and compare.  When it turns into you need to try this simple mechanical device that just happens to cost $4,000 I lose interest.  It feels too much like exploiting OCD, which we all have at least a little.