For a long time, the sound quality problem of custom bone conduction headphones seems to have become an urgent problem to be solved. There is even a saying that "bone conduction earphones sound like a sound" among earphone enthusiasts.

There are two main reasons:

1. Most people think that the current bluetooth bone conduction headphone technology is not yet mature, which leads to poor sound quality.

2. There is an essential difference between solid transmission and gas transmission. When we listen to the music that is accustomed to gas transmission, we try to experience the music of solid transmission. There will be a certain error in the senses, which leads to the self-perception of "poor sound quality".

3. Everyone's bones are different, and the sound quality will naturally differ. This is an unavoidable objective factor. As for the sound quality, it is also a purely subjective feeling.

Therefore, the sound quality problem of custom bone conduction headphones is not an urgent problem to be solved. It may also be an unsolvable problem, and the best solution is to adapt.