htt://w ww.zhi hu.com/question/52406216
And here's the files, the flat one equals to the correction irs you need, just rename it to .irs and you can get it into V4A to work.
htts://pa n.ba idu.com/s/1KBOmSccw6YLEGRVcyvjDog pin: qwqw
But I didn't recommend impulse file use pure flat curve like this, because in-ear headphone don't like speaker, the sound collected on the tympanic membrane but without resonance through the auricle. So usually in-ear headphone's frequency response should like this:
htts://ww w.inner fidelity.com/content/harman-tweaks-its-headphone-target-response
So here, the better choice is to tune headphone's response to curve like Harman's target response, you can try the Harman's file, it should be more better than flat one.
And if you don't like Harman's response(someone may be think this too much low frequency), you can try myself's target, my curve base on Harman's target, but reduce 2db in lower 100Hz, and add 1-1.5db on 1k-3.5k.