I wondering if anyone has applied the Audeze DSP EQs to OPPO PM-3 . Being Planar I was thinking maybe the SINE or EL-8 settings may match. PM-3 are very flat and can use a little sparkle at the high freq.
Why don’t you just play with it…it’s in there and won’t cost you anything but some time.
There is no point asking what settings others use…everyone hears differently.