China Cymbals Sounds A best guitar pickup is actually just like a vibrant microphone coil. For decades, vibrant microphones have now been sent with the style coil attached with the primary of the microphone's transformer, and perhaps not referenced to ground (‘floating'). The microphone's event is normally linked to the cable shield, which will be connected to the microphone amplifier's floor (see Rane's site for more discussion).
By and big, active microphones are extremely quiet units consequently of the combination of transformer solitude and balanced, flying sign lines for the duration of, in addition to guarded, humbucking coils.
So why not guitars? Guitars are notoriously plagued by noise. Humbucking pickups are only an incomplete (though important!) solution. The most obvious answer is to float practicing the guitar collection to a healthy production, being a microphone. A similar idea was printed this 2001 patent application like this China Cymbals Sounds?