It is an inherent weakness of using a rotating socket for connector as you can not guarantee every angle the pin will have a perfect contact in the socket. When the socket is a tiny bit too loose, you get cut off on a certain angles. But if the socket is too tight, you have issue with rotation and worst, socket fitting and pin stress. Anyway, I do believe all the issues with lost connection could be socket related, and most likely on the inner pin socket on the earpeice side. My SE215 too cuts off on the left at a very odd angle though totally doesn't affect normal usage. However as somewhat a DIY person, I did a small mod (not really a mod, more like a tightening) to fix the issue and now it is working 100%.
Here is what I do:
Warning: I hold no responsibility for anything you do to your own IEM. Try it at your own risk!
Tool needed: Small, pointy forceps or similar tool that can take a little force without bending on its own.
Basically, use the forceps to apply a little force on the inner pin socket and start to rotation the earpiece so the inner pin socket receives pressure evenly on all side. This should tighten the pin opening just enough to get better contact to the pin on the cable. Caution: We are not trying to flatten the socket so do NOT apply too much force at first. Instead, try several times and adjust the pressure accordingly. Put the earpiece back and see if it improves or not.
In Canada they sell them at local Best Buy stores so these are fairly easy to acquire compared to the GR07. Technically though the GR07 would be a better IEM along with the DBA02 at the price point
