Includes Stereo components but this is only a small representation of the spectrum of audio amplifiers. There are actually amplifiers all around us. You’ll find them in televisions computers portable CD players and most other devices that use a speaker to produce sound.
Some applications include schools, hospitals, factories, restaurant/retail, and fitness facilities, A/V boardrooms and small offices. Typical uses are paging, background music, security and evacuation instructions.
The amplifiers vary in their number of inputs, number of outputs, and power range.