An electronic apparatus comprising: a communication interface; a display; an internal speaker; and a processor, characterized in that the processor is further configured to: obtain a first processing time regarding a first audio signal output by the internal speaker and a second processing time regarding a second audio signal output by an external audio device; obtain a difference value between the first processing time and the second processing time; based on the difference value being greater than a predetermined value, obtain a delay time based on the first processing time and the second processing time; and control output of the internal speaker or control the communication interface to transmit a control signal to the external audio device so that the first audio signal or the second audio signal is offset based on the delay time such that the first audio signal and the second audio signal are output within a predetermined time, the predetermined time being 10 milliseconds or less, wherein the processor is further configured to obtain the first processing time based on an input format of a first audio data corresponding to the first audio signal obtained from the external audio device through the communication interface, wherein the processor is further configured to obtain model information of the external audio device from the external audio device through the communication interface, and obtain the second processing time based on the model information. a communication interface; a display; an internal speaker; and a processor, characterized in that the processor is further configured to: obtain a first processing time regarding a first audio signal output by the internal speaker and a second processing time regarding a second audio signal output by an external audio device; obtain a difference value between the first processing time and the second processing time; based on the difference value being greater than a predetermined value, obtain a delay time based on the first processing time and the second processing time; and control output of the internal speaker or control the communication interface to transmit a control signal to the external audio device so that the first audio signal or the second audio signal is offset based on the delay time such that the first audio signal and the second audio signal are output within a predetermined time, the predetermined time being 10 milliseconds or less, wherein the processor is further configured to obtain the first processing time based on an input format of a first audio data corresponding to the first audio signal obtained from the external audio device through the communication interface, control output of the internal speaker or control the communication interface to transmit a control signal to the external audio device so that the first audio signal or the second audio signal is offset based on the delay time such that the first audio signal and the second audio signal are output within a predetermined time, the predetermined time being 10 milliseconds or less, wherein the processor is further configured to obtain the first processing time based on an input format of a first audio data corresponding to the first audio signal obtained from the external audio device through the communication interface, wherein the processor is further configured to obtain model information of the external audio device from the external audio device through the communication interface, and obtain the second processing time based on the model information.