Drum With Stick A best guitar pickup is essentially similar to a dynamic mike coil. For decades, dynamic microphones have already been wired with the voice coil mounted on the principal of the microphone's transformer, and maybe not recommended to surface (‘floating'). The microphone's case is usually attached to the cable shield, which is linked to the mike amplifier's ground (see Rane's site for more discussion).
By and large, active microphones are extremely quiet devices as a result of the mix of transformer solitude and balanced, hanging sign lines for the duration of, as well as protected, humbucking coils.
So why don't you instruments? Guitars are once affected by noise. Humbucking pickups are merely a partial (though essential!) solution. Well-known alternative is to float the guitar pickup to a healthy output, just like a microphone. A similar strategy was published this 2001 patent request such as Drum With Stick?