Thanks for the response and for checking!
Here is another example - just the first 10 secs with that pulsating bass. I absolutely don't suggest you should torture and stress test your pair, but the
tone generator cleared all the doubts I had. I started at 270 Hz and went down in 20 Hz intervals. With songs I had to crank the 887 to ~1 o'clock in mid gain (XLR), but with pure tones, in the 220-200 Hz region the resonance was clearly audible at 11 o'clock.
As said in
my post, I tried two pairs, both had the same issue. Just before the weekend, I went to the dealer and the salesman gave me an Arya Stealth to audition. The resonance was there too, with both of us hearing it in the above song (I took my Tone2 Pro with me, so it was near max volume in high gain).
So I'd say it's a design thing. Made me remember the discussions here about Focal drivers (see the
Clear Pro review). Another option is the dealer got an entire batch of faulty Hifimans...
As I already wrote, I'm far from hating on the headphone. I know it's perfectly competent with most material at normal volume levels. And on top of that, it has some outstanding qualities I listed in my previous post. At low to moderate levels, the sub-bass was indeed impressive. But If my $150 cans can handle all I throw at them and then some, I expect the $500 ones to do the same, and excellent performance in other areas just can't make up for that in my opinion.
EDIT: could I be hearing the reasonances
@amirm caught when measuring the Aryas? It would match his observation of the effect extending up to several hundred Hertz:
View attachment 240089
The THD and group delay graphs in the
review seem to confirm this. There is a spike to >1% distortion @200 Hz. No idea if I reached 114dBSPL when testing, but maybe it's just a tad more pronounced with the XS?