Some frequencies (mainly the bass) are buried, resulting in them being unsuitable for music. Unless you have an equalizer in the medium you are listening from...

The headphones are good, they have good sound quality and fit well with their foam tips. And the silicone ones they have on their own are equally good. They just aren't worth their money. It's better for someone to spend an extra 10 euros and get a sennheiser of the same price range that is really amazing. Their bass is very weak. In the end, they are somewhat disappointing. They are fine, just not anything special, especially compared to other headphones of the same price range.

I have them for 1 week, their sound is balanced without exaggerations in the bass. Perfect for any genre of music without causing fatigue after prolonged use.
Very sturdy construction, even the cables are thick compared to other headphones at this price.
It has 3 different pairs of "ear cushions" for each ear. They are worth their money

I don't recommend them, they are very expensive, at first they seemed good to me, but now they have problems, one plays quieter, and both don't play well. Something that I had for free with a 6-year-old Sensa mp3 player plays much better. I have had them for 3 years now and I'm not sure if they ever played well enough to be worth the 40+ euros. I won't get them again.

I use these specific headphones for in-ear monitoring for singers. They are excellent for their price. They have a rich sound and sturdy construction. The only drawback is the need to replace the elastic ear-pads with higher quality foam pads. Personally, I replaced them with the Shure EAYLF1-100/20 and they transformed!