Earlier we mentioned that condenser microphones require power. Depending on the make and model, that power can come from something as simple as an AA battery. In fact, many shotgun microphones use this as a power source, which is handy for cameras without power options.
Phantom power is the industry standard for condenser microphones and comes from balanced input jacks on mixers and cameras. A little switch supplies the mic with 48 volts, but there's no risk of shock. Although the voltage is fairly high, there's not enough current to give you even a tingle.
There's only so much volume a microphone can take. Don't worry: it won't blow up, but it can sound pretty bad. Several factors determine the maximum volume level - the diaphragm and electronics are at the top of the list. Years ago, a loud blast could permanently damage a ribbon or condenser microphone. Today's models are much more durable. The maximum SPL number simply indicates the loudest sound the mic can reproduce cleanly. Anything above that risks disto…
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