Electric Guitar And Bass A electric guitar pickup is actually much like a powerful microphone coil. For many years, dynamic microphones have now been sent with the voice coil mounted on the principal of the microphone's transformer, and perhaps not recommended to ground (‘floating'). The microphone's event is usually linked to the cable shield, which will be connected to the mike amplifier's floor (see Rane's site for more discussion).
By and big, dynamic microphones are very calm units as a result of the mixture of transformer isolation and balanced, flying indication lines all through, in addition to protected, humbucking coils.
So why not instruments? Guitars are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though crucial!) solution. The obvious solution is to move your guitar pickup to a balanced output, being a microphone. A similar strategy was published this 2001 patent software such as Electric Guitar And Bass?