Making a Mini Mic preamp module?

You need 48v phantom power.

See link 2

And a few diodes for protection

I would drop the gain and put a second stage in with a pot to set the levels

You could up the input Z but 1 k should be fine.

That is about right for the first stage but maybe drop the two100k resistors to 22 k and put a bit more gain in a second stage or just use the microphone input on the camera as second stage

This should do 48v with a few mods

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