Simple Microphone Pre-amp

simple audio pre amp

This Simple preamplifier circuit provides sufficient gain to weak audio signals from the microphone. This circuit can also be supplied from the voltage baterry 3 to 9 volts if necessary. Take a note that the microphone used in this pre-amp circuit is electret type.

If you are using high fidelity sound system, the this mic pre-amp will not become a good choice, you should be find other circuits.

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