An audio processing apparatus includes a signal receiver to receive a content signal; a first amplifier to output a first amplified signal of an audio signal extracted from the content signal; a second amplifier to output a second amplified signal of the audio signal, which has an inverted phase of the first amplified signal; a loudspeaker to produce a sound corresponding to the audio signal; a switch to perform a switching operation so that at least one of the first amplified signal and the second amplified signal respectively amplified by and output from the first amplifier and the second amplifier can be selectively transmitted to the loudspeaker; and at least one processor configured to control the switching operation of the switch in accordance with a level of output power of the sound.