Allen Heath Ice 16 A guitar collection is actually much like a vibrant microphone coil. For decades, dynamic microphones have now been wired with the voice coil mounted on the principal of the microphone's transformer, and not recommended to soil (‘floating'). The microphone's event is typically connected to the cable guard, that will be attached to the mike amplifier's surface (see Rane's web site for more discussion).
By and large, vibrant microphones are very quiet products consequently of the mixture of transformer isolation and balanced, floating sign lines all through, as well as guarded, humbucking coils.
So why not instruments? Instruments are once overwhelmed by noise. Humbucking pickups are only an incomplete (though crucial!) solution. The most obvious option would be to float the guitar pickup to a healthy production, just like a microphone. A similar thought was printed this 2001 patent request like this Allen Heath Ice 16?