What is an Amplifier and How Does it Work?

1. 1. An amplifier is an integrated circuit device that creates a larger copy of an original sound signal before sending it to the speakers.
   2. An amplifier gets signals from input sources such as CD players, USB drives, or laptops.
   3. Inside the amplifier is a transistor that controls the amount of electric current needed for amplification.
   4. The amplifier has a volume/gain control that dictates how powerful a transmitted signal is in the speakers.
   5. Amplifiers can exist as independent units or can be fitted inside a receiver.
   6. Receivers exist in two forms; a stereo receiver and an AV receiver.
   7. A stereo receiver is only for audio while an AV receiver can handle video and audio.

Also read: What is Dynamic Range Control in Audio Systems?

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