eli5 What does microphone impedance mean, what does it affect and do I need to care about it with a PC USB mic?

Question

eli5 What does microphone impedance mean, what does it affect and do I need to care about it with a PC USB mic?

In: 3

Answer 1

You don’t need to worry about impedance of a UAB microphone.
It’s a measure of resistance presented by the capsule to a preamp, but since there is a fixed gain preamp after the mic capsule that’s presumably correctly matched to it for the digital-analog converter after it to not overload it or the USB circuitry, it’s a moot or even useless spec to care about (and publish, frankly).
HTH.