Thanks for the good review, but I'm going to rant, and it's not aimed at this reviewer, but the industry in general.
If an earphone or headphone needs complex EQ'ing at multiple frequencies at this price, it's a fail. It simply has not been designed or manufactured correctly.
The headphone market is a bad joke these days, and money does not translate into tangible audio quality. People now just go by price as an indication of the sound quality of what they are supposed to be hearing. It's always been like this, but I feel it has gotten far worse over the last 10 years, with the rise of expensive portable music players with terrible "safe" audio performance, with a flat sound signature which just is another way of being able to produce devices and headphones smaller and more cheaply to ensure a higher profit margin. Seriously, these earphones can't possibly cost more than $50 each to produce, yet they are priced into the stratosphere, and have the frequency response of a $50 earphone from the 90's.
I wish reviewers would call this kind of behaviour out, instead of falling in love with these items for the bragging rights based on brand or how much they cost, and of course, the continuing flow of expensive products to test. I mostly blame Apple, and the Apple press for this situation, after launching god-awful earphones and headphones at high prices which sound like something that should not cost more than $30, and Tim Cook standing on stage telling people how amazing Apples audio and manufacturing engineers are, and telling you that these things are the pinnacle of audio tech, and sound "the way the artist and sound engineer intended". This has resulted in Apple and their over-excitable press reviewers telling everyone how amazing these awful things sound, and how the price is actually a bargain. Now we have headphones and earphones at many times the price that sound hardly any better. I have simply lost count of the Apple/YouTube reviewers which are now reviewing lots of high end audio devices and headphones, and the shortest part of the review is the part where they talk about how these things actually sound, with sound quality coming last, compared to design, fashion, bragging rights and cost... Tells you everything really.