@Cesar > I would advise you to return the units for repair to your nearest authorised repair centre.
[SOLVED] HDJ-2000 cable problem
I haven't had any complaints with the headphones but the stereo plug has gone. I now hear the sound as if it's muffled or far away and I have to turn the plug around to momentarily fix it. I bought these last year and didn't think I'd be having these problems only after 1 year of home use.
I have the exact same issue, and I bought these headphone only a few months ago!
@ak ahlu > Then I would also advise you to return the units for repair / replacement under warranty.
Also check that the 1/8-to-1/4 screw adapter is secure... many DJs don't notice that it has become slightly loose and that will affect the connection and thus sound quality.