It remains a concern that may put off some, or even to represent a totally unacceptable defect is ergonomics. The headset modules have a peculiar shape with a large round hard plastic part that "fills" the pinna. In my particular case, it goes once strung I no longer feel the atria, which are not in contact with the cartilage of my ear.
In some people who have a size and / or a different form of ear on the other hand, the plastic will eventually rely on the flag and then cause discomfort or even pain, making uncomfortable listening, and in the worst case headphones unusable after a few minutes of use.
I guess it is this particular form that allows TX1 pretend this sound quality, unlike more conventional ITE whom I often criticized out a muffled sound, not enough light and airy. But I have no doubt that because of this, some will not wear them in adequate comfort conditions.
I'm lucky, despite sensitive ears, I do not have that concern. It is for me a very satisfying purchase!
