Led Zeppelin Concert A guitar collection is basically much like a vibrant mike coil. For decades, powerful microphones have already been sent with the voice coil attached with the principal of the microphone's transformer, and maybe not recommended to soil (‘floating'). The microphone's event is normally connected to the cable guard, that will be linked to the mike amplifier's surface (see Rane's website for more discussion).
By and large, dynamic microphones are very quiet devices as a result of the mixture of transformer isolation and balanced, hanging indication lines during, as well as protected, humbucking coils.
Therefore why not guitars? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though important!) solution. The most obvious option would be to float the guitar pickup to a balanced production, just like a microphone. The same idea was printed this 2001 patent application like this Led Zeppelin Concert?