Fishman Platinum Stage A guitar pickup is basically much like a powerful microphone coil. For many years, energetic microphones have been wired with the style coil mounted on the primary of the microphone's transformer, and maybe not introduced to ground (‘floating'). The microphone's situation is usually linked to the cable shield, that will be connected to the microphone amplifier's surface (see Rane's web site for more discussion).
By and large, dynamic microphones are extremely calm units as a result of the mix of transformer isolation and healthy, flying sign lines during, along with shielded, humbucking coils.
Therefore why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The obvious solution is always to float the guitar collection to a balanced production, being a microphone. The same thought was published that 2001 patent program like this Fishman Platinum Stage?