Sometimes it is also the terminology. H8.2 or most IEMs and headphones and speakers for that matter will not suffer from problems with treble *extension* because all these will reproduce sounds all the way to the end of the audible frequency range. If rather, it is a matter of how the treble is *tuned*, then some may prefer a "brighter" treble" thinking that it is equivalent to greater details being reproduced. But personally I see the point of being careful with what we wish for in the treble frequencies reproduction. I used to own several pairs of Grados and I sold them all except one because, as Piotr mentioned as well, it can get tiring listening to such a treble tuning.