Chosen Solution

I’m wondering how could I fix this? I tried looking for spare parts, but no luck with SMS audio.

I just want to clarify - the outter part, which is cracked, is fixed(e.g. doesn’t move) but the part inside, seemingly not broken, moves so the headphones can fit over your ears better, and the one break is the only issue. If that’s correct, there are a few things you could try:

  1. If you want a quick, but not good looking fix, just wrap some duct tape of gorilla tape around it
  2. If you want a nicer, but slightly more annoying fix, you can use super glue, although it has the tendancey to drip, run, and bond things you don’t want stuck
  3. If you want an ok-looking fix that’s relatively easy,you could use vary small drops of glue with something like Bondic or Sugru (if you have access to either) to put a little “cast” over the break Basically any way you can stick it together and make it look nice in the easiest way possible will work.