I don't think there is much rolloff in extended treble. Take anything above 11-13kHz with a grain of salt. High treble gets really weird and directional and sometimes doesn't measure right.
Those sort of correlate with my very brief and noisy JamCam SoCal 2015 impressions. Decent bass (hitting harder than the Ethers), but a bit bright perhaps... and that's as far as I go cuz I'm not HE1K loaner special.