Isolation and comfort seems to be the big issues when it comes to IEM, I recently came across a thread on r/headphones that discusses using moldable material to create a custom mold for the IEM. The full tutorial is available here:  ...

Man, this feeling sucks. I did the recabling mod, it went fine, but today I discovered that the left earcup sounds a little different from the right earcup, so I went and re-soldered the pins on both cups.   BUT, my fat fingers made the solder melt through the thin copper wires connecting the...