A speaker apparatus includes a first wireless communicator connected with a first source apparatus to receive a first audio signal from the first source apparatus or connected with an external speaker apparatus to transmit the first audio signal to the external speaker apparatus; a second wireless communicator configured to be connected with a second source apparatus to receive a second audio signal from the second source apparatus; and a controller configured to control the first wireless communicator and the second wireless communicator. The controller controls the first wireless communicator to switch from a reception mode to a transmission mode to transmit the second audio signal to the external speaker apparatus in response to the second wireless communicator being connected with the second source apparatus.