sound simple audio amplifier

Posted on Feb 7, 2014

The quality sound was terrible, and suddenly it stoped working. Can anyone explain me in which part of the circuit i did something wrong any sugestions to improve the sound quality and make it work the transistors used are both BC546, and the microphone was acctually an input for an mp3 player, but i didn`t found in the programam that i did the schematics, so i put i microphone.

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