i have had hifiman he4xx headphones for about a month that i got from massdrop.
Recently i quickly took the wires out of the left/right ear pieces (which is fine to do on these) as the right one was sticking out a little.
When i tried to place the right one back in it does not stay, there is a small metal ring that comes out but it is different to the one on the left earpiece which plugs in perfectly. This has caused it to always fall out and there is no sound coming out of the right ear.
there is no way a part fell out as i have looked everywhere in the place it happened.
anyone know what do to? thanks