Drum Heads For Low Tuning A best guitar pickup is actually similar to a dynamic mike coil. For many years, energetic microphones have been sent with the voice coil attached to the principal of the microphone's transformer, and not called to ground (‘floating'). The microphone's case is typically connected to the cable guard, which can be connected to the microphone amplifier's ground (see Rane's site for more discussion).
By and big, dynamic microphones are extremely calm devices consequently of the combination of transformer isolation and healthy, flying indication lines for the duration of, along with shielded, humbucking coils.
So you will want to guitars? Instruments are notoriously overwhelmed by noise. Humbucking pickups are only a partial (though essential!) solution. The most obvious option would be to move your guitar collection to a healthy production, being a microphone. A similar thought was printed this 2001 patent application such as Drum Heads For Low Tuning?