Guitar String Sound Vibration A best guitar pickup is basically just like a dynamic microphone coil. For many years, vibrant microphones have already been sent with the voice coil attached to the principal of the microphone's transformer, and not called to ground (‘floating'). The microphone's situation is usually linked to the wire shield, that will be connected to the mike amplifier's floor (see Rane's site for more discussion).
By and big, vibrant microphones are extremely quiet devices as a result of the combination of transformer isolation and balanced, flying sign lines for the duration of, along with guarded, humbucking coils.
So why don't you instruments? Guitars are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though important!) solution. Well-known option is to move your guitar collection to a balanced output, just like a microphone. A similar idea was printed this 2001 patent application like this Guitar String Sound Vibration?