Although I know the LM386 is intended as a power audio amplifier, I wish to know if it can be used as a pre-amplifier for an electret microphone capsule, as I intend to use it for that purpose. If yes, can you suggest basic schematics?

  • \$\begingroup\$ What is the input referred noise value for the 386? I suspect it will be poor and, because I've never seen anyone do this, I expect there are no basic schematics. \$\endgroup\$
    – Andy aka
    Commented Dec 21, 2022 at 10:31
  • 2
    \$\begingroup\$ There are many circuit diagrams on the internet showing how to use an LM386 as a microphone preamplifier. In general, the LM386 is a poor choice for a microphone amplifier. It "works" in the same sense that a garbage truck can be used as a race car - you can drive it around the race track but you won't be winning any races. This site isn't about recommending circuits, it is about designing circuits. If you refer to a specific LM386 microphone amplifier circuit, you will get advice on how to use it and why it is bad. \$\endgroup\$
    – JRE
    Commented Dec 21, 2022 at 10:43
  • \$\begingroup\$ Thank you very much, sir. \$\endgroup\$ Commented Dec 21, 2022 at 17:07


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