Initial impressions very different and depending what you like may be better or not, but different, not worse because of intensity details more noticeable.
Bass texture and size increased almost at a majestic level of finesse.
Mids no longer as prominent and seemingly more integrated or pushed back to sound balanced with rest of spectrum.
Less intimate and More sound stage but still not at level & size of my th600 soundstage.
Trebles two things..
Lower trebles seem in line with mids.
Upper highest trebles seem increased,
Leading to an apparent sense of more details,
The similar effect my th600 has with upper trebles.
So in effect you have a more authoritive balanced can with more impact yet less prominent mids more flat overall sound less audio-technica and more like a reference sound.
I am handing it over to my family member for his ear comments without telling him anything except it's a different sound. ..
Ok they said the mids were slightly more recessed than flat compared to the higher amount of bass and trebles.
They liked the treble and bass was excellent. More clear and defined slight boost over stock
I just did this mod.
Bass definitely has more impact
I feel if anything treble dropped off a bit.
The mids definitely aren't as forward
If anything the bass is a bit overpowering to me now but damn, is it tight, impactful and deep.
Congestion cleared up a bit.
Only thing is I really had to stretch the alpha pads to get them on. I hope they'll fit back on my ADs!