Drum Head Ludwig A guitar collection is essentially similar to a vibrant mike coil. For decades, dynamic microphones have now been wired with the voice coil mounted on the primary of the microphone's transformer, and not referenced to surface (‘floating'). The microphone's case is usually connected to the cable shield, that is attached to the microphone amplifier's floor (see Rane's web site for more discussion).
By and large, vibrant microphones are extremely calm devices as a result of the combination of transformer solitude and balanced, suspended indication lines throughout, along with shielded, humbucking coils.
So why don't you instruments? Guitars are notoriously plagued by noise. Humbucking pickups are merely an incomplete (though important!) solution. Well-known answer is always to move the guitar collection to a balanced output, just like a microphone. A similar idea was published that 2001 patent request like this Drum Head Ludwig?