Audiophilepure

Iris is a bass-first IEM, and it does not hide it. The low end is big, deep, and pretty addictive. You get a real rumble, plus a nice hit, so it feels fun and physical. But it is not a messy bass. It does not bloom all over the place.

Midrange stays in a good spot. It is not pushed forward, but it is also not missing and gets its due space. The stage is roomy, so the midrange does not feel crowded even when the bass is doing its thing.