Mono Audio refers to a single-channel audio output, where all sound is mixed into one channel. This means that all audio elements, such as music and dialogue, are played through one speaker or headphone. Mono audio is often used in situations where stereo sound is not necessary, such as in phone calls or certain types of radio broadcasts. In contrast to Stereo Audio, which uses two channels to create a sense of space and directionality, mono audio provides a more straightforward listening experience. While it may lack the depth of stereo sound, mono audio can be beneficial for clarity and consistency, especially in environments with background noise.