We are going to upgrade our packing. Does it look good?:slight_smile:

There are no major difference in terms of the FR curve when covering one hole instead of two. But one hole has stronger resonance then two holes at the bottom end frequency. And the air pressure is different too. It will affect the sound a little bit (different response time at the bottom end)...

Hi! I am Kenneth, owner of Phonic IEM. I am so glad that you have received your IEM. If you think that the sounding is too dark for you, something that you can do to adjust the bass and resonance. As the picture showed above, there are two holes on the top of the wooden shell. Once you seal...

Very detailed review!! Thank you very much!

How about the phone out sound quality comparing to ipod and other Sony DAP?