Bass Musicman Stingray A electric guitar collection is essentially similar to a dynamic microphone coil. For many years, dynamic microphones have been sent with the voice coil attached with the principal of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's case is normally attached to the wire shield, that is connected to the microphone amplifier's surface (see Rane's internet site for more discussion).
By and large, active microphones are very quiet units as a result of the mixture of transformer isolation and healthy, suspended sign lines for the duration of, in addition to guarded, humbucking coils.
So why don't you guitars? Guitars are notoriously affected by noise. Humbucking pickups are only a partial (though essential!) solution. The most obvious solution would be to float your guitar pickup to a balanced production, just like a microphone. A similar idea was printed that 2001 patent software like this Bass Musicman Stingray?