Processing / Tips for soldering:
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The plug is made mostly of metal and has at the end where the cable comes out, a rubber cap. This first insert the cable to it after soldering can. The break area behind the golden connector consists of two halves, which are pressed together and are then screwed together in the elongated end. That is the thing a lot of support and it can not be overtightened. Something was tricky soldering, because the left and right channels while holes were to carry the cable, but no opening in the metal pin for the common ground / chassis. In addition, you would have to avoid very clean and thick solder joints, so that the plugs afterwards also fits together. I have soldered afterwards wrapped with insulating tape, so they get no contact with the outer metal casing of the plug. Otherwise passes this and the sound is gone.