I bought some headphones named ESPERANZA TITANIUM TH104 which are wireless but they can connect with cable too. When i Connect my headphone on PC via audio cable the sound is very good,but when i use them with the wireless Emitter the sound Quality gets very bad.The sound is weak, i hear strange noise from backround(The closest i can Describe it is like soft wind) Also when sometimes i move in other positions another sound appears for a while similar to when you search radio frequences.(like zzzt zzzt).