Usb Audio Interface Noise Problem A best guitar pickup is basically much like a dynamic mike coil. For many years, vibrant microphones have already been wired with the style coil attached to the primary of the microphone's transformer, and maybe not introduced to soil (‘floating'). The microphone's situation is typically attached to the cable shield, that will be linked to the microphone amplifier's ground (see Rane's website for more discussion).
By and large, dynamic microphones are extremely quiet products consequently of the mix of transformer isolation and healthy, flying transmission lines for the duration of, in addition to shielded, humbucking coils.
So why not guitars? Guitars are once overwhelmed by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The obvious answer would be to float practicing the guitar pickup to a balanced production, being a microphone. An identical idea was printed this 2001 patent application such as Usb Audio Interface Noise Problem?