Hey. I bought on ebay without searching a set of Sony Mh1 earphones. But later i saw that its the old OMTP model instead of the CTIA. From my understanding there will be malfunctions like the volume up/down or the answer call button. But will the quality of sound be as is supposed to be? (or will it work at all?). I read that on some phones the sound is ok, but on others there are problems e.g the maximum volume is too low. Does anyone know for sure? Thx !