Can a power cord increase the resolution of an Class D (SMPS) amp by more than 5% ?

Power cords are a small tweak to the sound.
Yeah it can be a nice tweak, but asking for 5% is pretty much not gonna happen. try a under 1% and that is really giving the tweak a benefit of a lot of puffery.
I just spent $7000 on a new disc spinner and that upgrade might have gotten me a mystery and total snatched out of thin air 2% not close to the mythical 5%.
Now my new $14,000 speaks yeah they got me near 5% over the previous $5,200 speaker that were eight years old.

""I am wondering where Elizabeth is getting her numbers from 2% not 5% for a power cord. ""

"might have gotten me a mystery and total snatched out of thin air 2% not close to the mythical 5%. "
I you read it, You can see I used the words mystery, snatched out of thin air." What more could I write to say where I got that?

Let’s see. The unicorn told me? Maybe I invented it? The Elves? Perhaps for just this discussion I pulled number right out of my bung hole!
When one discusses the impossible, all things may be true.

Fist off the op using the magic of a percentage of a fantasy calculation. Not that cords do nothing, rather the arbitrary percentage of judging how much any ’improvement’ means. It is all subjective.

I find the reality is we mostly overstate improvements. SO I tried to be more objective, and cut down the puffed up numbers.
Like my new 20.7 Magnepans are certainly better than the 3.6 I owned.
What percentage? based on what criteria? Applying a number is horse feathers.