I really liked this article by Toms and it sums it up perfectly, they had a bunch of senior audiophiles in this blind test and none of them were able to tell which was the $2 DAC and the $2000 DAC
https://www.tomshardware.com/reviews/high-end-pc-audio,3733-19.html
I constantly have to remind fanatic money wasting clowns on head fi about this all the time. Also burn in isn't real it is your brain adjusting to the sound, I have no idea why seemingly educated continue to spread propaganda and audio myths in the audiophile community. (well I do it has to do with buyers remorse)
Look how I got a HD 58x and the difference between the jubilee and my old HD 555 is small. I somewhat attributed it to my Xonar DG sound card with DAC and AMP built in not being up to scratch but lets be real that really isn't the case as my built in Onboard Asus Crystal Sound 2 audio is only a small downgrade from the Xonar DG card. Sure its noticeable but not a big amount. And I Want to bet alot of it can be fixed with an EQ