Speaking of impedance adapters, it
seems that PR2 v2 was tested with an impedance adapter and it gave interesting results (for a single driver iem), presumably due to the electronic filtering. If it also works like that in PR3, it seems getting a 10-20 ohm impedance adapter could be a good way to attenuate the treble if someone finds it too harsh. Sure, one could EQ, but then you gotta EQ on all devices with possibly different OS, different software, an adapter like this could simply be more convenient. I know there are cheap 15 Ohm ones on Ali, so I may try if I find the highs too annoying.