An electronic apparatus (100"), comprising: a storage arranged to store an operating system; a controller arranged to boot the electronic apparatus using the operating system stored in the storage; a speaker arranged to output sound; a communication interface arranged to receive sound data from an external apparatus; and a sound processor arranged to process and output the received sound data through the speaker, wherein the communication interface, the sound processor, and the speaker are arranged to operate even when the electronic apparatus is not booted, and characterised in that the communication interface comprises: a first Bluetooth communicator arranged to operate only when the electronic apparatus is booted, and to exchange data with the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using a digital method; and a second Bluetooth communicator arranged to receive sound data from the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using an analog method; and in that the sound processor comprises: an audio amplifier arranged to amplify the sound data transmitted through the second Bluetooth communicator and output the sound data through the speaker; an audio codec to operate when the electronic apparatus is booted, to decode the sound data transmitted using the digital method, and to output the sound data through the speaker; and a Platform Controller Hub PCH arranged to transmit the sound data outputted from the first Bluetooth communicator to the audio codec. a storage arranged to store an operating system; a controller arranged to boot the electronic apparatus using the operating system stored in the storage; a speaker arranged to output sound; a communication interface arranged to receive sound data from an external apparatus; and a sound processor arranged to process and output the received sound data through the speaker, wherein the communication interface, the sound processor, and the speaker are arranged to operate even when the electronic apparatus is not booted, and characterised in that the communication interface comprises: a first Bluetooth communicator arranged to operate only when the electronic apparatus is booted, and to exchange data with the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using a digital method; and a second Bluetooth communicator arranged to receive sound data from the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using an analog method; a first Bluetooth communicator arranged to operate only when the electronic apparatus is booted, and to exchange data with the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using a digital method; and a second Bluetooth communicator arranged to receive sound data from the external apparatus using a Bluetooth method and transmit the received sound data to the sound processor using an analog method; and in that the sound processor comprises: an audio amplifier arranged to amplify the sound data transmitted through the second Bluetooth communicator and output the sound data through the speaker; an audio codec to operate when the electronic apparatus is booted, to decode the sound data transmitted using the digital method, and to output the sound data through the speaker; and a Platform Controller Hub PCH arranged to transmit the sound data outputted from the first Bluetooth communicator to the audio codec. an audio amplifier arranged to amplify the sound data transmitted through the second Bluetooth communicator and output the sound data through the speaker; an audio codec to operate when the electronic apparatus is booted, to decode the sound data transmitted using the digital method, and to output the sound data through the speaker; and a Platform Controller Hub PCH arranged to transmit the sound data outputted from the first Bluetooth communicator to the audio codec.