Definitely the best ear buds I've owned. They only recently started to get run down with the left bud now seeming to die out with severely diminished audio volume. The small grey rubber nub attached to the bottom of the jack also eventually detached, enabling the wiring to get worn/damaged.
BackwardCapDon't know if this help, but try changing the filters. I used the silver pairs and when i open it a layer of the filter melted blocking the sound.