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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@RandyHarmon
You want your input to be in the 3.3V range for the Espruino, but your mic wants 4-10V, per the oh-so-detailed specs :). I would compute a voltage-divider for the mic input to bring the signal into your target voltage range.
You could try feeding the mic with 3.3V off the Espruino too, but you'll probably get very poor response from the mic that way.