1951 Fender Nocaster A guitar collection is essentially much like an energetic microphone coil. For decades, dynamic microphones have now been wired with the style coil mounted on the primary of the microphone's transformer, and not recommended to soil (‘floating'). The microphone's case is usually connected to the wire shield, that is linked to the mike amplifier's ground (see Rane's website for more discussion).
By and large, dynamic microphones are very quiet units as a result of the combination of transformer isolation and balanced, flying transmission lines during, as well as protected, humbucking coils.
So why not guitars? Instruments are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known alternative is always to float practicing the guitar collection to a balanced production, being a microphone. The same idea was printed this 2001 patent request like this 1951 Fender Nocaster?