joined just to say thanks
After lurking for a while, reading reviews of good portable headphones, I finally came across this thread. I just finished modding my KSC75's that came in from amazon yesterday, it took about an hour to do the quarter mod and cut holes in the pads.
For other people thinking about doing this, the black plastic cover is actually really sturdy, so don't worry about breaking it while drilling the holes. Getting it out of the case required more than "gentle" pressure, but it does pop out. After that, just some work with a knife + sandpaper cleaning up the holes, it was done.
I don't think they beat out my SR-60s quite yet (lol) but it's definitely a step in the right direction. Bass is definitely more there, maybe a little tighter too.
Anyway, I registered just to post here and say thanks to the HeadFi community for discovering this budget gem. Highly recommended!
EDIT: pictures added.