Black Sabbath Live Albums A best guitar pickup is essentially similar to a dynamic mike coil. For many years, dynamic microphones have now been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not called to ground (‘floating'). The microphone's event is usually linked to the wire guard, that will be attached to the microphone amplifier's floor (see Rane's internet site for more discussion).
By and large, dynamic microphones are very quiet units consequently of the mixture of transformer solitude and balanced, floating indication lines throughout, as well as guarded, humbucking coils.
Therefore why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious option is to move your guitar pickup to a balanced production, just like a microphone. A similar idea was printed that 2001 patent application like this Black Sabbath Live Albums?