A display apparatus is disclosed, which includes a storage configured to store a plurality of code sets, a communicator configured to perform communication with a remote control apparatus having a microphone, an interface connected to an audio output apparatus and configured to transmit an audio signal to the audio output apparatus, and a processor configured to transmit one of the plurality of code sets to the remote control apparatus while the audio output apparatus is outputting the audio signal, and in response to an audio signal received at the remote control apparatus through the microphone being received from the remote control apparatus, determine whether the code set transmitted to the remote control apparatus is a code set capable of controlling the audio output apparatus by determining whether the audio output apparatus is outputting the audio signal based on the received audio signal.