For my birthday about 6 weeks ago my girlfriend got me a pair of FiiO FA1s. I really like the aesthetic and the sound, but I noticed something weird today. So when I wear this IEMs and I take them out, it sounds and feels like a vacuum is released. Like they seal so good they actually form a bit of a vacuum. Now today I was wearing my ZSTs during gaming, and I noticed that these don’t have that effect at all. I also noticed that since I got the FA1s I would sometimes get a short slight piercing pain in my ear, not necessarily when I wear them so no idea if there’s a link there.
Does anyone have any experience with this and know whether this is a problem and how I can solve it?