Different composition: Audio is generally composed of multiple speakers, power amplifiers, mixer and other equipment, which is a relatively complex system. The loudspeaker is only a part of the sound system, and it is a device that converts sound signals into sound waves that can be transmitted through the air.

different functions: the stereo is a combined device that can be placed in a large room or outdoor space and can play music, movies and other sounds. The sound system can improve the sound quality and enhance the sound effect by adjusting the parameters of each device. The main function of the speaker is to convert sound signals into sound waves and play music, movies, phone calls and other sound signals.