Looking at AQ NRG-Y3 for parasound A21 amp....

I am thinking about taking the leap into Power Cables. I am told that it would “Greatly” enhance the sound quality of my stereo. Therefore, I am going to start off small and budget around $150. I am looking at the Audioquest NRG-Y3. My only concern is when I read the box, it states that it helps source components.
Will this provide a better sound on my Parasound A21 Amp. Will enough current pass. Is it a “Huge” improvement over a stock power cable. Any info is greatly appreciated!

thanks,