I need advice for power cords

@beatify,
I concur. And, welcome to Audiogon.
Bob

Cullen cables produce outstanding speaker, power and digital cables.  ICs are strong as well.  Cannot go wrong with his cables.....

For those that might be interested -
https://silversonic.com/products/power-cables/corona/

Dimora has it exactly right: A $5,000 power cord is limited by your house wiring, no matter what claims might be made by the manufacturer. A case could be made for ultra-expensive cords if; and only if, you run them all back to a dedicated power panel, connected directly to the drop lines from the street to your house.  Even then, utility AC power can often leave much to be desired in terms of stability and line noise. If you live in a condo or apartment then you’re out of luck in that regard. A much better idea is build your own cords as Dimora suggests, use hospital grade plugs; change the wall outlets to hospital grade; and, if you own your place, run a dedicated circuit for your system inside metal electrical conduit or copper mesh sleeving (conduit probably both better and cheaper) grounded at the panel end for noise shielding; and above all, invest in a good power conditioner.