Seymour Duncan Single Coil Pickups A best guitar pickup is basically much like a powerful microphone coil. For many years, active microphones have been wired with the style coil attached with the primary of the microphone's transformer, and perhaps not referenced to soil (‘floating'). The microphone's case is typically connected to the wire guard, which can be attached to the mike amplifier's ground (see Rane's site for more discussion).
By and big, active microphones are very quiet products consequently of the mixture of transformer solitude and healthy, suspended sign lines throughout, in addition to guarded, humbucking coils.
Therefore why don't you guitars? Instruments are notoriously plagued by noise. Humbucking pickups are merely a partial (though essential!) solution. The most obvious answer would be to float practicing the guitar collection to a healthy output, as being a microphone. The same strategy was printed this 2001 patent software such as Seymour Duncan Single Coil Pickups?