@ddonicht
I updated a while back with these (based on a post from a few years ago on this site). I did notice a small difference, especially with some consistency at higher volumes.
The power cord you purchased and refer to above is the WAudio 10AWG HiFi Audiophile Power Cord. This power cord and the Micca 14 gauge pure copper speaker cables are the two products I have purchased that were complete disappointments because of how noticeably they colored the sound. Truly like putting a blanket over my speakers.
You will be pleased at the increase in sound quality once you replace the Waudio power cables, even if replacing with a bone stock $5 Monoprice power cord.
I would recommend that you purchase a decent quality entry level power cable from any of the long term established brands.