Abstract: The headset of the invention includes a control unit, a switch unit, a connector, a speaker and a microphone. The connector is used for connecting an external device. The speaker is electrically connected to the control unit. The microphone is electrically connected to the control unit. The switch unit has a common contact electrically connecting the connector and two switch contacts electrically connected to the control unit for switching either the speaker or the microphone to electrically connect with the connector.

Abstract: An earphone assembly with an audio receptacle, comprises a connecting portion suitable for locating the earphone assembly upon the head of a user; two ear masks installed at two ends of the connecting portion; a seat being installed at one of the mask or at the connecting portion; an insertion hole being formed in the seat as an audio receptablce for receiving an audio plug; and a connecting wire having two plugs at two ends thereof; one audio plug being able to connect with the insertion hole of the seat. Moreover, the seat can be replaced by a prolong wire and the insertion hole is formed in the prolong wire.