I have one of these units and when I bought the unit it came with the remote, only the headphone were unplugged from the head set (which was not included in the sale).  I have searched far and wide to find out what model of headphone go with this unit.  It looks like I should be able to find a new pair and plug them in.  MY question is does anyone know the model MD-R headset that came originally with this unit and second, Hugo sold one of these FX55 awhile ago and the unit looked like a pair of earbud were using the wired remote.  So if you know of any model sony MD-R that uses this plug connector please let me know.

Thanks Bryan