If you do not have a car with a custom stereo or any type of musical instrument you may not realize what an amplifier is and what it does. An amplifier is an electronic equipment that takes the sound generated by a musical instrument or a stereo and enhance or amplify the signal and that electronic output comes through the speakers.
An amplifier is needed for many musical instruments in order to connect them to the speaker. Amplifiers also help produce a unique sound that you hear playing a lot of musicians, especially guitar players.
Most guitar players can with a car stereo amplifier basically just wanted to make a very loud without much distortion sound.
How well the amplifier is highly dependent on a number of specifications. The advantage is the ratio between output and input and is usually measured in decibels.
Bandwidth is another important specification to consider. This is the range of frequencies that can result in amplifier.
Another quality to consider efficiency, especially for a car stereo. Efficiency tells you how much power goes into actually applied to the output amplifier. Class A amplifier most efficiently while the Class AB amps are the best.
The point is that people use amplifiers to make their cars and musical instruments sound very possible. More sophisticated musicians buy amplifiers to produce sound higher and richer than what the instrument can produce just by itself.
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