Dream Theater Live A guitar pickup is basically just like a vibrant microphone coil. For decades, dynamic microphones have already been sent with the voice coil mounted on the principal of the microphone's transformer, and perhaps not recommended to surface (‘floating'). The microphone's event is normally connected to the cable shield, that is connected to the microphone amplifier's floor (see Rane's website for more discussion).
By and big, dynamic microphones are extremely quiet products as a result of the combination of transformer isolation and balanced, flying indication lines during, along with guarded, humbucking coils.
Therefore you will want to instruments? Instruments are notoriously plagued by noise. Humbucking pickups are just a partial (though essential!) solution. The most obvious solution would be to float the guitar pickup to a healthy production, just like a microphone. A similar idea was published this 2001 patent request such as Dream Theater Live?