Roland Spd S A electric guitar pickup is basically much like a powerful microphone coil. For decades, dynamic microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and perhaps not recommended to soil (‘floating'). The microphone's case is normally attached to the cable guard, that will be linked to the mike amplifier's surface (see Rane's site for more discussion).
By and large, powerful microphones are very calm products consequently of the mix of transformer solitude and healthy, suspended sign lines for the duration of, along with guarded, humbucking coils.
So why not instruments? Guitars are once plagued by noise. Humbucking pickups are merely a partial (though essential!) solution. The most obvious option is to move your guitar pickup to a healthy result, being a microphone. A similar thought was published that 2001 patent program such as Roland Spd S?