So much for the optics. The sound of earphones I stand against very ambivalent. As a test object my Sony Xperia Z3 Compact served.
On the positive to note that this handset have a very low impedance and thus are exceptionally loud. Finally, I no longer have to fumble around in the equalizer to extract even a few decibels. The bass no distortions or vibrations remain at the highest volume clearly and precisely identified.
Now the first serious disadvantage: The earphones are in the central region are very cautious and extremely dull. Chants going in pompous arrangements under almost. In addition, S-sounds and snares be accompanied by an unpleasant hiss.
As indicated in the title, it depends on the right choice of music. In electronic music (House / Techno / Trance etc.) and Hip Hop is the dull, bass-driven sound setting optimal. In rock and pop but reveal the weaknesses. The bass drowns out any song, the centers are spongy and the highs too thin. I thank God almost exclusively electronic music listening, this is not a big disadvantage for me. There are departures but anyway, since even with Vocal Trance numbers the voice is partially distorted by unpleasant sibilance.
In conclusion, I advise all people who do not listen or electric hip hop, from buying the earphones. There are others in this price range, which offer a more neutral and balanced sound perception. Fans of hard bass and fast beats come with these earbuds their money's worth.