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

@phd "Power cords can make a huge difference. This difference can be on par with buying a new amp (component upgrade).” (-) in your bank account!

""Have you tried an after market cord?”

- Yes many times, the first one about 25 years ago.

"why?"

- I was curious about the products and most units came with detachable cords to make it easy to do so.

I didn’t read all the post so if someone mentioned this. You stated in first post “after a couple weeks of daily use I hear no difference”. Does daily use mean you are not running cord 24/7? Even if you are running amp 24/7 300 hours may not be enough to burn in your cable. If it’s not run in it will sound thin. 

Expensive Cables, Wires, and Power Cords to make a huge difference on your wallet and that can affect your listening experience. Because you spent so much money you're going to hear things you never heard before. Like your brain telling you you should have never spent that much money on snake oil. Joke joke joke. I don't put a lot of stock in it. I bought some great wires and cables etc and I've had some really cheap ones.. The problem with the cheap ones is the build quality. Of course you never go for the cheapest stuff ever. Put yourself a reasonable spending limit on them and spend within your budget. I mean you should really consider it when you're buying a system that you know you're going to need cables, wires and etc etc. These are just accessories and there's a difference between the good and the bed and the ugly. The good is half decent Brands at good price. The bad is the Rock bottom cheap ones that don't have the best wiring or connections. The ugly is the overpriced ones that try to sell you something that is snake oil. Be a smart, educated buyer. Just cuz you're eating a steak. Doesn't mean you need a gold fork.

Use a gold fork if it makes the steak taste better. 

I will give you a hint, dont use words like "snake oil". Defines your tribe and taints everything to follow.