Dynamic Microphone Xlr A electric guitar pickup is actually similar to a vibrant mike coil. For many years, powerful microphones have now been wired with the style coil attached with the primary of the microphone's transformer, and perhaps not introduced to surface (‘floating'). The microphone's event is typically connected to the cable shield, which is connected to the microphone amplifier's surface (see Rane's internet site for more discussion).
By and big, powerful microphones are extremely quiet units consequently of the combination of transformer solitude and balanced, flying transmission lines all through, as well as protected, humbucking coils.
So why not guitars? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The most obvious alternative is to float the guitar collection to a healthy output, as being a microphone. The same idea was printed this 2001 patent application like this Dynamic Microphone Xlr?