AV system stands for audio visual, more commonly known as an audio video system. In the simplest of terms, it is any system that incorporates an audio and a visual component. Most of the basic systems that we are familiar with today are some forms of audio video systems. They exist in everywhere in our modern life. We see them in small packages such as the smartphone in our pocket, all the way up to a complex system used at a rock concert, or the video conferencing system