However, even if I do not know much in sound, I really think the sound produced by these headphones is very poor. It really hurt to hear the voice in a piece where the instrumental is more present than usual song. And yet, I'm not talking about opera or classical but of rock songs could not be more classic!
That is to say, the latest headphones I bought, unmarked and 3 euros, had a much better sound than these, which is still strange for headphones at 9 euros!