I applied the suggested EQ to Caldera to see what Amirs preference is. Well, the bass becomes stronger but bloated and starts to leak into the mids, the treble becomes shouty and fatiguing. There is the illusion of bit more detail that comes with it, but thats basically it. Worst of all, the very natural life-like sounding headphone (probably most natural sounding planar that I had around) loses that characteristic since even an acoustic guitar might sound bassy in some recoridngs, not to speak of shouty violins and such
Sound is always a preference, but what was suggested here hints a VERY specific prereference and pobably a rather high age of the reviewer, since the suggested brightness for people in their mid - late 30s will be just be too much.
My EQ is developed in the context of complying with research produced target curve. As such it is not "my" preference although I do tweak things some. That research says that most listeners like more bass than this headphone has. And I match that research. As I noted in the review, my speakers in a real room produce far more bass than this headphone does. I also have headphones that comply with the research target and they too produce far more bass, matching (and even exceeding) what my speakers produce.
Note that since we have no control over how music is produced as far as tonality, you have to be careful in assessing fidelity and expecting it to translate to others/other situations. I too have music that can sound bloated with bass with this target. But across some 300 reference/tests tracks I have, almost all sound better with this level of bass.
Now here is the big thing: adaptation. If you have been listening to this headphone for a while, your ear/brain have adapted so its tonality will seem right to you and anything else wrong. This is why many people like even broken speakers/headphones. They adapt (and hence the myth about "break-in," you break in, not the device). My adaptation is in reverse: having heard so many neutral speakers and using the same for headphones hours a day, the Caldera sounds lifeless and anything but "hi-fi."
Note that I don't spend a lifetime developing the EQ. And what I produce, is done by eye, not by a computer fully turning the response to target. My goal is to see if major shortfalls in response are producing less preferred sound. And there is no question about that here. I did however note that some brightness existed with my EQ on some tracks. More optimization of filters is necessary to deal with that.
Finally, the overall balance of bass to treble is subjective and i have no issues with others having a different preference. I dial in some amount quickly in my bass filter and go about my business. Depending on what you listen to, you are more than welcome to adjust. But not to the point of saying stock response is correct. It is very incorrect.