Burn-in question

That's a stretch. Besides, the Cable Cooker customers have no financial interest in making that observation.  Don't be such a conspiracy theorist.

Just use this Pink Noise Generator (pink button), raise the volume and leave it on while your at work, press the oscillate high button to vary it up and down. forget all the voodoo gimmicks that cost money.
https://simplynoise.com/

Cheers George

@audio4pass, you reopened the proverbial can of worms and you are going to hear from both sides of the spectrum.
With that said, based on my experience and examination: +1 teo_audio.