| 摘要 |
An audio apparatus includes: an audio device arranged to supply an audio signal to a speaker to play an audio; an external adapter connected to the audio device; and a mobile phone device detachably mounted to the external adapter, in which the audio device plays, via the external adapter, an audio signal from the mobile phone device, and the external adapter includes a control unit and in conjunction with mounting and detachment of the mobile phone device with respect to the external adapter, the control unit changes a state of the audio device.
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