Maschine Software Download A guitar pickup is actually much like a dynamic microphone coil. For many years, energetic microphones have now been wired with the voice coil mounted on the primary of the microphone's transformer, and not referenced to ground (‘floating'). The microphone's situation is typically attached to the wire guard, that is attached to the microphone amplifier's ground (see Rane's site for more discussion).
By and big, active microphones are extremely quiet products as a result of the mixture of transformer solitude and healthy, suspended transmission lines throughout, in addition to shielded, humbucking coils.
So why don't you instruments? Instruments are notoriously plagued by noise. Humbucking pickups are only an incomplete (though essential!) solution. The obvious alternative is to float the guitar collection to a balanced result, being a microphone. An identical strategy was printed this 2001 patent request like this Maschine Software Download?