how to make sound booster?

how to make the sound booster?

This is a sound booster circuit diagram. this circuit boosts the sound. It’s also like a pre-amplifier. sometimes we need to increase the sound. that time we need this circuit. we also can use this circuit for the headphone to increase the sound. some audio divide has low sound quality. then we can use this circuit to increase the sound. this circuit run from only 1.2 volts to 9 volts. here we used a 1.5 volts battery. we also can use dc voltage. 

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Build a Transformer or construct the transformer. Home Theater Circuit Diagram 5.1

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