Beware of the cable claiming long burn in period.

I agree with Elizabeth.Everything needs some break in time.Since I don't listen all day every day like she does,if something can't sound good and stay that way after 50-100 hours then back it goes.

I once owned a California Audio Labs Delta CD transport, with both their Sigma and Alpha DACs. Given they were to sit side by side(Delta/DAC) I thought a .5M Kimber Orchid would be a good AES/EBU to try. Couldn’t listen to it, regardless of time in service, or which DAC I tried. Then I remembered something about, "reflections" and, ’jitter", resulting from too short a digital cable length. Purchased a 1.5M Orchid and everything was wonderful(but- still got better, with time). Regarding burn-in time for cables: I’ve always held(yeah: my opinion) that part of it was attributable to the fact that cables are capacitors(actually, an LC circuit, to a degree) and their dielectric’s dipoles need time to align themselves, with relation to whatever voltages/signals they’re going to be dealing, before they sound their best. The better the dielectric(ie: Teflon, Polypropylene, etc) the lower the dielectric absorption, but- the longer the process takes. I suppose, moving cables around, might scramble one’s dipoles, as well. Perhaps that’s why some mention having to re-burn-in their cables, after handling. https://en.wikipedia.org/wiki/Dielectric_absorption

Threads like these are perfect examples of why falling for audiophile tropes like "everything needs burn in" doesn't have good consequences.There's enough real things for an audiophile to worry about let alone sitting around wringing hands over "burn in."  But...it's your dime....

They all require long burn in times. So what’s the difference? Hel-loo! Beware the guy who tells you it sounds good right out of the box.

If the OP had a return privledge which seems to the case based upon his representation hear then his failure, unwillingness, and resistance to returning it for a refund is obviously a problem of his own cause, inaction, and creation.