Ah, I don't understand what you mean. What rising bass slope, this headphone doesn't have a rising bass slope? And about the range of modern music you mentioned, if that's in reference to the bass then there are plenty of tracks with bass down to 30Hz, even 20Hz, so it's worth having a good bass response in a headphone even down to 20Hz. Also about the range of modern music you mentioned, the highs in modern music go all the way up to 20kHz, cymbals can be up there in the 17Hz+ range I think....certainly when I've watched a spectrum analyser when listening to various tracks then there's stuff happening up there, but the measured frequency response of a headphone in that area is not very predictable, so you'd just use the measured frequency response above 10kHz as a guideline to your general EQ up there, and most of the time you'd be using High Shelf Filters up there to get that measured response into a sensible relationship with the rest of the curve combined with your listening testing (but my comment about the Utopia 2022 frequency response was not really in relation to it's above 10kHz measurement). So basically the whole measured curve from 20Hz-20kHz has value & meaning, and certainly in the bass.