Is this a common occurrence with Yuin earbuds?
My OK2 underwent fairly light use; once a week, maybe twice a week once in a while, for a couple hours commute on the train.
The cable seemed to have broken at the same point near the jack (I could move the cable around and sound would cut in and out of the left earbud, but not the right.) Even worse, it broke just about exactly one year after purchase.
Fang was kind enough to replace them for me, but my new pair I don't believe is covered by any more warranty. Man, I hope it doesn't happen again.. Not sure what I'd do.