@oratory1990 posted his measurements and
EQ preset to the Harman OE target.
Preamp: -5.7 dB
Filter 1: ON PK Fc 35 Hz Gain -1.0 dB Q 1.4
Filter 2: ON LSC Fc 105 Hz Gain 5.5 dB Q 0.71 (bass)
Filter 3: ON PK Fc 600 Hz Gain 1.0 dB Q 2.0
Filter 4: ON PK Fc 1900 Hz Gain 6.3 dB Q 1.3 (midrange accuracy / shoutiness)
Filter 5: ON PK Fc 2800 Hz Gain -4.2 dB Q 2.3
Filter 6: ON HSC Fc 3000 Hz Gain 0.5 dB Q 0.35 (treble)
Filter 7: ON PK Fc 4050 Hz Gain 1.6 dB Q 3.0 (sharpness)
Filter 8: ON PK Fc 5750 Hz Gain -1.5 dB Q 6.0 (airiness)
Filter 9: ON HSC Fc 10000 Hz Gain 3.0 dB Q 0.71
Filter 10: ON PK Fc 11300 Hz Gain -2.0 dB Q 6.0
Now I'm wondering how to adapt this 10-band EQ to the RME ADI-2 EQ style: 5 peaking filters, 1 low-shelf filter, 1 high-shelf filter.
Sometimes oratory1990 posts this too, but not for these headphones.