Art Sla 1 A best guitar pickup is actually just like a dynamic mike coil. For decades, dynamic microphones have already been sent with the style coil attached to the principal of the microphone's transformer, and not called to surface (‘floating'). The microphone's situation is usually attached to the cable guard, that will be connected to the mike amplifier's floor (see Rane's web site for more discussion).
By and large, powerful microphones are very quiet products as a result of the mixture of transformer isolation and healthy, hanging sign lines throughout, as well as shielded, humbucking coils.
So why not instruments? Guitars are notoriously affected by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The obvious option is always to move your guitar pickup to a balanced production, being a microphone. A similar thought was published this 2001 patent request such as Art Sla 1?