My son had a pair of KZ ZSM10 IEMs for drumming. The little nub that the cable attached to dissolved. We just ordered a new pair.
Has anyone had issues like this with their IEMs? Is it just ear wax that dissolves whatever material they used, or is this some kind of current/heat issue? I never heard him say the IEMs were too warm, but I can't think of any other reason the material would dissolve.