Double Neck Electric Guitar A guitar collection is actually just like a dynamic mike coil. For decades, active microphones have been wired with the voice coil mounted on the primary of the microphone's transformer, and maybe not called to ground (‘floating'). The microphone's case is normally attached to the cable guard, that will be connected to the microphone amplifier's surface (see Rane's website for more discussion).
By and big, energetic microphones are very quiet products as a result of the combination of transformer isolation and balanced, suspended transmission lines all through, as well as guarded, humbucking coils.
Therefore why don't you guitars? Guitars are notoriously plagued by noise. Humbucking pickups are just an incomplete (though crucial!) solution. The most obvious alternative would be to move practicing the guitar pickup to a healthy production, being a microphone. A similar thought was printed that 2001 patent request like this Double Neck Electric Guitar?