Getting back to the OP's question... I'm not convinced how "audiophile" mains cables will make a difference to audio quality. The cable needs to make a solid connection to the mains outlet and the device. Beyond that, there is so much variation in cable and connections from the power station to the building, then cabling to the switchboard and from the switchboard to the wall outlet. I can't understand how 1 meter of super cable will make a difference in sound given the kilometers/miles of cable variation behind it. Yes, once the power is delivered to your device, quality can be affected by transformer quality, power smoothing, cable quality and lots of other stuff beyond my basic electronics ability. But before it enters the device, I can't see it making the difference.
I could be wrong, I've personally not tried or compared mega-audiophile-quality mains cables, and I'm aware that some people swear by the difference it makes. I'm open to be proven wrong, but am not sure I will be.