Stereo refers to electrical or electronic tools, one of which serves to expand the audio signal, or are related to the process of sound live sound, broadcast, etc. Later a popular call, including equipment related to Imaging.
Audio refers to appliances or electronic bingo. Acting amplifier Or related to the amplifier audio broadcast or televised later on the call, including a visual signal equipment on.
.Audio electrical or electronic equipment means of some kind. That amplify the audio signal. Or the deals with the process of sound broadcasting relay amplifier, etc.