The present invention relates to an ear-set, an ear-set system, and a method for controlling the same. An ear-set according to an embodiment of the present invention comprises: an ear-set body comprising a communication module, which can conduct short-range communication with an external audio source device, and which receives an audio signal from the audio source device, a memory unit, which stored user setting information, an audio adjustment unit, which adjusts the magnitude of an input audio signal on the basis of the stored user setting information, and an audio output unit, which outputs the adjusted audio signal; and an ear-set housing, which contains the ear-set body on one side thereof, and which provides the ear-set body with electric charging in the contained state.