Schecter C7 Deluxe A best guitar pickup is essentially much like a dynamic mike coil. For decades, energetic microphones have been sent with the voice coil attached to the primary of the microphone's transformer, and not referenced to ground (‘floating'). The microphone's situation is typically attached to the cable guard, which is linked to the mike amplifier's surface (see Rane's site for more discussion).
By and big, energetic microphones are very quiet products as a result of the mixture of transformer solitude and balanced, floating sign lines all through, as well as guarded, humbucking coils.
So why don't you instruments? Instruments are notoriously plagued by noise. Humbucking pickups are merely a partial (though important!) solution. The obvious alternative is to move the guitar pickup to a balanced output, being a microphone. The same idea was printed this 2001 patent application like this Schecter C7 Deluxe?