Maestro Gibson Guitar A guitar pickup is basically just like a dynamic microphone coil. For decades, dynamic microphones have now been wired with the style coil attached to the primary of the microphone's transformer, and perhaps not recommended to soil (‘floating'). The microphone's situation is typically linked to the cable shield, that is connected to the microphone amplifier's ground (see Rane's site for more discussion).
By and large, powerful microphones are extremely quiet products as a result of the combination of transformer solitude and healthy, flying transmission lines throughout, as well as protected, humbucking coils.
So you will want to instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just an incomplete (though important!) solution. Well-known solution is always to move your guitar collection to a balanced result, just like a microphone. An identical idea was printed this 2001 patent application such as Maestro Gibson Guitar?