Came across this very useful thread belatedly! I have had poor luck with IEMs! They all had poor bass for me. I know I have different left & right ear sizes. The left ear usually sounds better with mid-to-large tips. The right needs the large tips (14mm is the biggest I can find) but the bass is still a bit lacking.
I find that if I lightly push on the IEM housing the bass improves dramatically! I get the sensation that my tips do not go in far enough but no way to prove this. Most recently, I bough the QKZ ZS5. It sounded much better but I wonder if the fact that it has a bigger housing that helps to secure it in the outer ear to push the tips further in is the trick. Any suggestions here on how to overcome my IEM dilemna?
I find that if I lightly push on the IEM housing the bass improves dramatically! I get the sensation that my tips do not go in far enough but no way to prove this. Most recently, I bough the QKZ ZS5. It sounded much better but I wonder if the fact that it has a bigger housing that helps to secure it in the outer ear to push the tips further in is the trick. Any suggestions here on how to overcome my IEM dilemna?