I'm guessing it's a kick stand. And I want it. I regularly have to find stupidly creative ways to prop my R4 up on random ish laying nearby (books, dirty socks, the shards of broken dreams, etc). Only hesitation is the beige color.
I'm raw dogging it until I can get a decent glass protector. That plastic stock one on the R4 was the first thing to get tossed when I opened the box.
Have you tried double-flange tips? Might be the solution you're looking for.
I'm with you insofar as those upper harmonics ("air") have a big influence on what I hear, but I think
@baskingshark's point is that you can't rely on measurements of those regions above ~8k (or I'd argue, even much above 5 or 6k). While every coupler is different, those measured differences become so wildly exacerbated in that region that you regularly see variations in the tens of dBs (and since dBs are logarithmic, those are
massive differences). It's a region where, with current measurement tech, we have to rely solely on our ears. Even worse, it's also a region that is susceptible to lots of personal variation because of age, gender, noise exposure, genetics, etc. FWIW I'm in my late 40s and lucky enough to still hear quite clearly into the 16-17k region, so like you, that region matters quite a bit to what I ultimately hear. There's just no way to measure it accurately.
Awesome review, as always. And another illustration of just how divisive this set is! I hear the Project M as a definitively "laid back" set, not at all "energetic" as you have it categorized. Based on the divisive reactions it's had among those of us in this thread, this seems to be the dividing line. Folks who hear it as energetic, hear it as way too energetic. Folks who hear it as laid back, hear it as a super chill set. Don't think the difference is down to hearing ability either, since like I said above, I can still hear well into the upper treble region. So weird.
The Project M seems a bit like cilantro: either you taste an amazing and refreshing herb, or you taste disgusting soap.