I was wondering if the treble will smooth out after doing the felt mod? I wanted to give them a little time in stock form to see if they grow on me. I did let them burn in for about 10 hours with some of the burninwave.com tracks. The bass is starting to open up, the mids are nice, but still a bit congested, and the treble is sibilant in a hissy sort of way (like when someone says SSSSS with a hole in their two front teeth). I was planning to remove the felt inside the earcups anyway. I'm curious if it will have an effect on the treble, or if I'll have to wait for burn-in for that reward? I might have to go back to my SHP895's until I do the mod.