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
The Analysis Plus Pro Power Oval goes for less than $100 bucks on line, one meter length and comes with Better than Hospital grade connector. $130 for 2 m length. Excellent value, no?

From Analyis Plus web site,

"Analysis Plus new PRO POWER OVAL uses better than hospital grade plugs that have a Perma-Lock Terminals, Large, high spring-rate contacts, Glass filled high temperature nylon front housing, Polycarbonate rear housing, Stainless hardware mated to a true balance cable for lower common mode noise. The 12 AWG gauge cable design has hot and cold leads that are symmetrical with a full shield around the hot and cold conductors to eliminate EMI/EMC. The cable also has the lowest inductance on the market for the lowest noise voltage of any pro power cord."




I own Krell, Bryston , McIntosh, electronics!
Spent thousands on national brand cables ! Stick to custom made cable makers! Same or better results for 1/3 the money!
My cables from Walter Wegrzyn Cable Co in Mesa Arizona! Custom cables , incredible quality, won't bankrupt you! 
I just use Zu audio Birth cables that I purchased from Ebay store that I use with Kef LS 50W cant tell much of a diffidence the stock cables supplied by Kef also seem to be of good quality
NO.

Power cords do absolutely nothing.  Think about it, what do you think you are plugged into?  As long as you are delivering the volts and amperes you are done.

All audio equipment runs on DC.  So what does matter is if your power supplies in your equipment is doing a good job of converting AC to DC.