The sound quality is good, overall. It's true improvement over the previous model, as many have claimed. But, there is an ergonomic problem. To find a proper fit position is a rather hard thing for my ears, contrary to many claims. Consequently, the bass sound is attenuated. It's still punchy but the sub-bass is missing. And, while it sounds natural due to balanced high-low, some details are missing (especially from low freq). When I hold the buds to my ears, it is clear that this earphone has lots of bass actually. Maybe the design is intended so...

When I listened to the sound for the 1st time, I was hit by it. I was punched by the not-punchy-bass. I was hoping it would offer much better bass response than SE315.. equals to Klipsch Image X10i. It gives better bass than SE315 but still far from Image X10i. The bass is still too weak, or just say not punchy. I am not a bass lover. I just want the sounds  to be there whenever they are there, incl the punch. It's just the bass, fortunately. As for other details & freqs, I can listen to them more clearly than my other IEMs. I like the neutrality of...