Cruelhand Luke
Headphoneus Supremus
well...you definitely have the bug.Yeah, i'm kind of looking everything everywhere right now, like...making ultra fast self education about basic universal rules of modding headphones...this read is quite interesting cause if cover lot of headphones I like (like the Portapro...wich don,t feel an urgency to mod as I likethem stock but if I get the ksc75 or sportapro very cheap might try some modding forsure!):https://lifehacker.com/get-better-sound-from-your-favorite-headphones-with-the-1516562484
Potential of Blon-Bossfi B7 look quite promising, while the Superlux 668B still is annoying sounding, why too peaky in highs and overall dry-bright sounding, not finish with it.
In fact, I have 4 Superlux models, the HD681EVO are the only one that aren't too bright but to the cost of details and soundstage, when you see how much the drivers have foam and peice of thick foam on it you understand why it sound dark....and even wonder how can some sound pass trough this!
I'm very curious about making sound good the HD660 cause I like their closed form and DT770 look, but they are my least lovable in term of musicality, cups arent easy to open....well no screw, perhaps its easier...will try.
I fall on a very interesting looking article about 681EVO mods testing...like, ultra informative made by a more than serious audiophile (or audio engineer). Its pdf. Its serious stuff. Its a must I think!
http://www.mediafire.com/view/av6k1rhkv5lwol6/Superlux_HD681_EVO.pdf
I think you are on the right path though. I read everything I can find on modding headphones, look at all the boring pictures etc to get a better understanding of how changes in materials, placement of them, removal, etc affects sound.
I mean, how do you think I wound up with silly putty around the drivers of an open backed NVX SPT100?