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
I use an MIT non networked AC3 pc and it was obviously great as soon as plugged in. Likewise with the AC1 and AC2 :)   No need for break in to notice improvements with my Spectral gear. Even using just an Oppo 205 for movies :)
Just return the PC. 
What a bunch of knuckleheads. We will know who you are by your response. 
It really depends on the cable.  I have had cables that break in had little to no impact.  Yet with others they sounded close off when first plugging them in and after 100+ hours they opened up quite a bit.