Does Power Cord Require Burn-In To Sound Good?


I recently bought a new power cord but there isn’t much difference in sound quality between this new cord and the previous Wireworld Elektra 7 which it replaces. The cords are used on the DAC.

Any ideas if the cord needs to burn in to open up and sound better? It currently has about 5 hours on it and I think I prefer the sound quality of the previous cord which costs 10 times cheaper.

Any thoughts appreciated.
ryder
If using different power cables yields no audible effects. Why do the makers of most high-end gear provide IEC receptacles to provide the opportunity to change power cords at any time?
I am pretty certain that the person who wrote this has no formal education, physics , engineering or otherwise related but is obviously making a failed attempt to insult those that do.

    Having no formal (or other, it seems) education in Physics; the typical Naysayer Doctrine adherents, will undoubtedly offer their ubiquitous, Newtonian (1800’s Electrical Theory), ceremonial whines, for your Communion and salvation.      

" So they can make one model for all markets."

- No, don't buy it. Different voltages in different countries can't be remedied by power cords only. 
@audio2design- I’m absolutely certain (experientially); you’re absolutely wrong.        Yours is simply another uninformed, Naysayer Doctrine adherent’s assumption.        Now: deny the possibilities, offered by the facts presented.