Alesis V Mini A guitar pickup is basically similar to a powerful mike coil. For decades, active microphones have been sent with the style coil attached to the principal of the microphone's transformer, and maybe not referenced to surface (‘floating'). The microphone's situation is normally connected to the wire shield, which can be linked to the mike amplifier's surface (see Rane's site for more discussion).
By and big, powerful microphones are very quiet units consequently of the combination of transformer solitude and balanced, flying sign lines all through, as well as protected, humbucking coils.
Therefore why don't you instruments? Instruments are once overwhelmed by noise. Humbucking pickups are just a partial (though essential!) solution. The most obvious answer would be to float your guitar collection to a healthy productivity, just like a microphone. The same strategy was printed that 2001 patent application like this Alesis V Mini?