Ok, maybe for people who don't like much bass? Less bass probably makes it easier to sleep with them...
Interesting, they appear to jut out more than the IE 200, and I'd worry they would wobble a bit if you touch the cable:
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The don't look like they'd be as comfortable to lie down on...
(But I haven't tried enough IEMs to know what to look for, so my logic is probably completely wrong)
I'm curious what the mesh/grill at the back of them is for. Does this leak a lot of sound so that others can hear it? And does it let in a lot of outside sound?
(I noticed my IE200 has a single very small hole on the back, but I don't notice any difference when I cover it)
I think the IE200 can be quite misleading when it comes to bass, setting aside the seal issues, because it has a certain elevation in the treble. In my opinion the bass can hit pretty hard and it extends down to 20 Hz without any problem. Of course, some people simply want more bass, and that’s fine.
As for sleeping on your side with IEMs, I don’t think I’ve ever found one that really works, because when you put your face on the pillow the IEM tends to get pushed inward and loses its seal, unless your pillow has a consistency close to a rock. I’ve had the E3000 for almost 10 years and I still find myself using it often (with EQ) because you barely feel it in your ears. It’s the only one I almost never need to readjust after long listening sessions, and it’s also manageable when I’m sleeping. Sure, if you pull on it with a lot of force you can yank it out of your ears, but it’s actually quite hard to do. Personally, it sticks out much less for me, with the cable exit resting against the concha of the ear.
The rear mesh is the vent for the bass chamber, which is why it’s considered a semi-open IEM, but I’ve never had any problems with sound leakage, not even in the university study room. Then again, I generally don’t listen at high volumes.
The rear vent on the IE200 is mainly there for basic ventilation and doesn’t really affect the sound that much. The driver sits inside its own housing, which is itself placed inside the shell. If you took the driver with its housing, pulled it out of the shell and stuck it into a bean, you’d get practically the same sound XD
Another alternative with a very stable fit, excellent comfort, and great sound even without EQ is the Meze Alba, which I really love and own with great satisfaction. Overall, they might actually be a better product than the IE200.
The images below are: Final E3000 (EQ) vs Hexa, and Alba vs IE200.