Behringer X Air 18 A electric guitar pickup is basically similar to a dynamic microphone coil. For decades, vibrant microphones have been wired with the style coil attached with the primary of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's case is normally linked to the cable guard, which can be linked to the mike amplifier's floor (see Rane's site for more discussion).
By and large, vibrant microphones are very quiet devices consequently of the combination of transformer solitude and balanced, hanging sign lines throughout, in addition to guarded, humbucking coils.
So why don't you instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely a partial (though important!) solution. The most obvious answer is always to move your guitar pickup to a healthy production, just like a microphone. The same thought was printed that 2001 patent application such as Behringer X Air 18?