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
Geoff / Good one

Randy / Although that would probably be awesome, only a few feed (directly attached to the electronic device) is required

Penns / I trust my ears so am not interested in Cardas cable or what Cnet states
Boxer12: I was advised my response was naughty! They removed it! I'm exiting stage right! Power away my friend!
Helomech: I'm tossing the ball in your court! I got thrown out for referencing a leading authority on high end! Hold down the fort!
A leading authority on high end? That usually means some guy in a cheap suit 50 miles from home.

Geoffkait: A large portion of electronics is personal taste! The power of the mind can move mountains! I bought a Pangea Amp power cord ( like 8 Guage ) and connected it to a Anthem amp! I noticed a change in sonic capabilities! My belief is the change in amperage flow (to unit ) that does it ! It's amperage that kills you with electricity vs Wattage! So do power cords give blinding change to sonic reproduction! It's your money, and your belief! I own Cardas clear! 4 figure power cables! Do the clear improve my system by 4 figures! IMO NO!