Roland Usb Audio Interface Quad Capture Ua 55 A electric guitar pickup is basically similar to an energetic mike coil. For decades, active microphones have been sent with the style coil mounted on the primary of the microphone's transformer, and perhaps not referenced to soil (‘floating'). The microphone's case is typically linked to the wire shield, that is connected to the mike amplifier's floor (see Rane's site for more discussion).
By and big, energetic microphones are extremely quiet units as a result of the combination of transformer solitude and healthy, floating sign lines throughout, in addition to guarded, humbucking coils.
Therefore why don't you guitars? Guitars are once overwhelmed by noise. Humbucking pickups are merely an incomplete (though important!) solution. The obvious solution is to float your guitar pickup to a balanced production, being a microphone. The same strategy was printed this 2001 patent application like this Roland Usb Audio Interface Quad Capture Ua 55?