First Wireless Guitar System A guitar collection is basically much like a vibrant microphone coil. For decades, energetic microphones have now been wired with the voice coil attached to the principal of the microphone's transformer, and maybe not recommended to ground (‘floating'). The microphone's case is typically connected to the wire shield, that is linked to the mike amplifier's ground (see Rane's website for more discussion).
By and big, energetic microphones are very calm devices consequently of the mixture of transformer solitude and healthy, hanging indication lines all through, along with protected, humbucking coils.
Therefore why don't you instruments? Instruments are once plagued by noise. Humbucking pickups are merely a partial (though important!) solution. The most obvious option is always to move your guitar pickup to a balanced production, as being a microphone. A similar idea was printed this 2001 patent request like this First Wireless Guitar System?