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FAQ:
Q: How to make microphone preamplifier?
A: An Electret microphone or audio from phone is considered as the input. … This signal is amplified according to the gain set by the POT. The input signal,which is in the order of few milli volts is amplified to few volts. … The output of the preamplifier is given to the non-inverting terminal of the audio amplifier.
Q: Do you need a mic preamp?
A: You see, any mic input on your interface has to have a preamp. So you don’t need to go out and buy an additional mic preamp. Your interface’s built in mic preamps serve the purpose of amplifying your mic input from mic level to line level.
Q: How to build an electret microphone circuit?
A: Soldering Iron Soldering Wire Vero board.