Another confirmation that no miracles happen. These are regular headphones with mediocre sound. I didn't have any high expectations, so I am fine with that. I was buying them for using with my laptop, mostly for watching movies and videos. They are good for this purpose, but I wouldn't use the for any serious work. The good thing I would like to point out is a very long cable, which is very convenient sometimes.
Update after some months of usage: they are fine for movies indeed, but listening to music causes some ear fatigue if used for more than an hour. There are audible resonances in high-mid range.