I think these sound so good out of the box because they have such an easy to listen to sound sig.
Some other headphones can seem more abrasive out of the box due to being brighter or overly mid focused etc etc.
These tend to take my brain at least longer to adjust to.
My Mad Dog 3.2's when I had those would take me 5 minutes to adjust to every time I put them on haha.
And I loved those!