I can't believe a post like this is getting replies like this. I thought we were here to educate people, and not perpetuate the snake oil marketing jargon that is absolutely destroying this hobby. Anyone who thinks a power cable changes your sound either doesn't know any better, or is willfully ignorant to objective facts and science.
If the OP is still around, please ignore anyone here trying to persuade you to 'upgrade' your power cable to improve your sound. These people would also have you believe that there are speaker cables that 'sound better' than the cheapest 12AWG OFC cables you can find. They don't. They're lying, or their own confirmation biases are taking over. The brain can be fooled easily, as evidenced by the replies here. Take the money you save from common sense and spend it on upgrades that actually do something.