Unhappy with the quality of manufacturing

I already had the E10M version (with microphone) before buying that new pair (the previous having had a faulty contact after 6 months at the wire). The E10 version without the microphone seems to be better (thicker cable), I was reassured. Unfortunately, after only a few days of use, the left atrium lost low: again a false contact, squarely within the atrium! Yet I was very careful not to hurt them, so it's really disappointing.

Conclusion: these headphones have a very good sound quality, but really last long, so more SoundMagic for me in the future, shame!