Disclaimer: This loan has been arranged by Rick, who is a regular visitor of this blog. I truly appreciate your support, my friend! Will return the headphone back to you promptly.
BlueFlyerMonkey, the creator of this modification, keeps record of his efforts on this thread at Head-Fi.org as an open-source database. I send my sincere respect to him for his continuous devotion. BFM describes the sound of DBV #3:
Sub-bass and bass are deep, musical, and textured. Bass does not bleed into the midrange or mask the treble range. Midrange is clear, lush, and properly placed. Treble extension and clarity are improved over DBV #1. Imaging is very good. These headphones are Fast.
CON: The tonality has became little too dark & the peak at 10 kHz is now more emphasized due to extra acoustic damping of the pads.
ON SECOND THOUGHT #3: DBV #3's frequency response follows Harman International's reference target only up to 1 kHz.