Good luck on trying different power cables as i didn't think they made much difference until I tried a much better one, quite a surprise for me!
Been in the game for 40 plus years took the last 10 years when I experimented to find out,
Unfortunately going to the wall doesn't work for me so into my TOT 50 as power where I'm renting flickers as I'm in my room .
The E-5000 is a wonderful integrated as I bought it after having the Esoteric F-05,
Best, Bob