Oooooooook. So. This headphone is Weird™
like… really weird
I have a few measurements now and can provide a preset, but the positioning sensitivity on this design is fairly high, so please make sure your ear is sitting towards the rear of the ear cup/the headphone is pushed forward and low on your head. If not, this likely won’t sound very good.
Hell, even with this preset it probably won’t sound that much better.
I have to say, this is a design I think is fundamentally flawed in numerous ways, and if you have this headphone I earnestly recommend trying to return it and buying something more normal. This preset won’t match the “target” precisely, because the unit I have on hand sounds bad if I don’t go quite a bit further with the upper midrange cuts. So keep that in mind; you will need to adjust manually above 2 kHz or so.
That said, here’s the preset:
Grell OAE-1
Confidence: LOWEST
Uses data from 5128, Clone KB50xx, Clone KB006x
Preamp: -6.0 dB
Filter 1: ON PK Fc 72 Hz Gain 2.0 dB Q 1.400
Filter 2: ON PK Fc 150 Hz Gain -7.2 dB Q 0.200
Filter 3: ON PK Fc 650 Hz Gain 3.0 dB Q 0.900
Filter 4: ON PK Fc 925 Hz Gain -2.0 dB Q 2.400
Filter 5: ON PK Fc 1300 Hz Gain 1.4 dB Q 1.000
Filter 6: ON PK Fc 3200 Hz Gain -2.0 dB Q 2.000
Filter 7: ON PK Fc 4750 Hz Gain -9.5 dB Q 1.800
Filter 8: ON PK Fc 5900 Hz Gain 10.0 dB Q 3.200
Filter 9: ON HSC Fc 9900 Hz Gain -5.0 dB Q 2.000
Filter 10: OFF LSC Fc 105 Hz Gain 0.0 dB Q 0.700
Filter 11: OFF HSC Fc 2500 Hz Gain 0.0 dB Q 0.400
Adjust filter 6 for raspiness
Adjust filter 7 for glare/scratchiness
Adjust filter 8 for fixing the ridiculous hole in this area
Adjust filter 9 for adjusting the balance between mid treble and upper treble
Adjust (and enable) filter 10 for overall bass
Adjust (and enable) filter 11 for overall treble
Good luck, and please please make your own adjustments in the treble above 2 kHz and bass. It is necessary.