Nobody needs more ordinary consumers

So I'm not a HiFi expert. The sound quality therefore seems to me absolutely well, all I can nciht imagine. Although I ever perceive the rich depths only with classical, jazz and pop in the earbuds is usually better in tone scale than the source of the music it exploits at all.
The isolation from ambient noise is good. Listen When using the rubber stopper but not perfect, for example music on the plane remains problematic. The foam plugs are even denser, so it is really away from the area.

However, I have other earphones that cost only a quarter and almost just as good - but as I said, I'm not the big acoustic Gourmet.