Kalfo Snare Drum Head A electric guitar pickup is actually much like a powerful mike coil. For decades, active microphones have now been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's case is typically attached to the wire guard, that is linked to the microphone amplifier's surface (see Rane's web site for more discussion).
By and big, active microphones are very quiet devices as a result of the mixture of transformer isolation and balanced, flying sign lines through the duration of, in addition to shielded, humbucking coils.
So why not guitars? Instruments are once plagued by noise. Humbucking pickups are just an incomplete (though essential!) solution. The most obvious option is always to move your guitar pickup to a healthy result, being a microphone. A similar idea was published this 2001 patent request such as Kalfo Snare Drum Head?