Can upgraded power cords help my setup?


I have some KEF LS50 Wireless speakers and decided to use them with a Bluesound Node 2 via a Lifatec optical cable. Can I see a significant and worthy improvement if I swap out my power cords for something like Pangea cords? Do I need the AC 9SE MKII on the speakers or will the AC 14SE MKII be good for each speaker and also the Node 2 (C7?)? Power cords seem to be the only place left for me to tweak the most out of my setup.

Thanks for any input.
asahitoro
This was posted by Cnet reviews on internet: highly respected reviewers of high end Audio:

Power Cables

High-end power cables are seriously a thing. I'm not kidding. If you believe changing the power cable in your gear will improve the audio or video...I have an island I want to sell you.

In short (so to speak), power cables have no effect on audio, video or any other kind of fidelity.
@pennsy,

This thread is no place for real electrical knowledge and logic. There's people here referencing Shunyata papers as proof of the science behind high-end cables.
make your own, their is no special magical spells being used by companies that can claim the one you made at home is inferrror. USe good quality cable, good connector and terminate it correctly.
The Neotech NES 3001 Speaker Cable which is 8AWG is what i use for my Power Cables Re-terminated properly with few diffrent connectors.

One can't help wondering if power cords are directional. Hmmmm.....