Hey there! I’ve gone ahead and taken an EQ profile @Resolve made for the HD 620S and both changed the measurement to include the results from other heads with DF-calibration, as well as revised the EQ moves slightly. Go ahead and give this a shot and see what you think!
Preamp: -3.9 dB
Filter 1: ON PK Fc 21 Hz Gain 4.0 dB Q 0.300
Filter 2: ON PK Fc 120 Hz Gain -5.0 dB Q 1.400
Filter 3: ON PK Fc 225 Hz Gain 2.7 dB Q 2.000
Filter 4: ON PK Fc 525 Hz Gain -2.4 dB Q 1.400
Filter 5: ON PK Fc 1510 Hz Gain 2.0 dB Q 1.400
Filter 6: ON PK Fc 2700 Hz Gain -1.5 dB Q 3.000
Filter 7: ON HSC Fc 8000 Hz Gain -4.0 dB Q 0.700
