Stereo audio is a sound reproduction technique that uses two separate audio channels to create a more immersive listening experience. By using two speakers or headphones, stereo audio can simulate the way we naturally hear sounds from different directions, allowing for a richer and more dynamic soundstage. In stereo audio, one channel typically plays sounds from the left side, while the other plays sounds from the right. This separation helps listeners perceive depth and space in music and other audio content, making it feel more realistic. Stereo audio is commonly used in music, movies, and video games to enhance the overall experience.