Multichannel amplifier

aaba In a multichannel amplifier according to the present invention, in a case where a headphone is not connected to a headphone output terminal, a switch IC and first to third switches are on/off controlled by a control unit so that an audio signal path for outputting a front channel signal FL/FR to a front speaker and extending from a first input terminal to a front speaker output terminal via a buffer circuit , a switch IC , a first volume control unit , a buffer circuit , and a first amplifying unit is not electrically connected to another audio signal path.