The included tips are very simple and very soft. They might not fit every ear. I didn't have any trouble, but you should consider using different tips of your choice.
Lows / Bass
The bass is awesome. It's quick and impactful, but not as deep as I would expect such impactful bass to be. These are mainly mid-bass dominated, so a bit more sub-bass and less mid-bass could make these earphones' bass perfect.
Mids / Vocals
The mids are not the most detailed mids around, nor the most accurate, but they will satisfy the avarage consumer. What bothers me is that they're recessed and at the same time not tonally accurate, as in quite a bit dark.
Highs / Treble
BYZ did a good job when it comes to avoiding sibilance. However, much microdetail was lost in the process. Still, most avarage consumers will find these highs quite adequate as they are, but if you're looking for a detailed pair, these earphones are not for you.