Headphones bad bill

I bought 2 pairs of headphones to help me in transportation when I lost my helmet.
Result: They troubleshoot well, are not especially expensive but of poor quality.
The sound is far too serious and tends to give a headache (And I'm far from audiophile)
In addition, one of the two pairs is already broken, after two weeks 'head' was dislocated.
That, after for the price I was not expecting a miracle, but I'm not the most satisfied.