Ok. So.
I have been doing tons of experimenting with different tips trying to work on the driver flex/suffocation problem that I have been having with the Atlas. Along with this, I have some impressions of the various included tips.
Please note, I'm just a dude who likes headphones. I'm not
super experienced. I've only had the Atlas for under a week, so these impressions of the tips might continue to evolve. I'll check back in, in a few weeks
Least Favourite: Marshmallow Foam
Second Favourite: Final Audio
Favourite: Single Flange Silicon
What I have found with the Final Audio tips is that the only thing which works for the driver flex/suffocation problem is an extremely light insertion so that a seal does not form. This also works with the single flange silicon tips. With the single flange silicon tips, half of the time, if I do a
very deep insertion, there is no problem....but that is only half of the time. Weird isn't it? The worst in terms of driver flex/suffocation is doing a normal insertion with both the Final Audio tips, and the single flange silicons. I get complete suffocation of the driver on both ears, no sound at all. A real bummer, as this is the comfiest for my ears. In terms of driver flex and suffocation, the marshmallow foams are the best, exhibiting no problems at all. However, for my ears, they are the least comfortable. I am going to try to get my hands on a smaller size, as I think it might be more comfortable for my ears. YMMV.
In terms of sound
Marshmallow Foam: Sounds kinda closed in and...marshmallow like. No hard edges to the sound, it sounds rounder, especially the bass. Gives a warmer presentation, which some might really enjoy.
Final Audio: Seems to be like a combination of the marshmallow foams, and the single flange silicons. A bit more treble than the foams, but less than the single flange silicon tips. Similar closed in sound.
Single Flange Silicon: My favourite. Opens up the treble completely, a real sense of "airy-ness." You definitely loose a bit bass, but I have been bringing it back up a couple DB with EQ. For me and my ears (you might be completely different,) this is working the best. Best soundstage of the three tips. The treble is a bit sharper with these tips.
Hope that helps someone who is struggling with the tips that come with the Atlas.
It might be a bit of a pain finding the right tip, at the right insertion depth but
holy cow, it is 100% worth the struggle. These sound fantastic!