Audio Power Amplifier

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myheart22

Joined Dec 5, 2010
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Hi!

I am a 3rd-yr ECE student from the Philippines.

Until now I am confused with the difference between Preamplifier and Amplifier.
We had a design proposal on Audio Power Amplifier but then, our work is always been trashed by our professor because I can't answer him what is the purpose of the preamp if there is already a power amplifier. :/

Moreover, can you please tell me what is the advantage of having a preamp. And what may be the output if I didn't include the preamp on our design.

Any kind of help will be much appreciated. Thank you! :)
 
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