Who knows? How much vibration do you have? If you whack it with a hammer you'll probably get enough signal. 
Condenser microphones have a similar built-in amplifier circuit but acoustic sound waves are weak and they still need a preamp.
Who knows? How much vibration do you have? If you whack it with a hammer you'll probably get enough signal.
Condenser microphones have a similar built-in amplifier circuit but acoustic sound waves are weak and they still need a preamp.