Tone Zone Pickup A best guitar pickup is actually much like a dynamic microphone coil. For many years, active microphones have now been sent with the voice coil mounted on the primary of the microphone's transformer, and perhaps not recommended to floor (‘floating'). The microphone's situation is normally linked to the wire guard, that is connected to the mike amplifier's soil (see Rane's web site for more discussion).
By and big, powerful microphones are very quiet units consequently of the mixture of transformer isolation and balanced, floating transmission lines for the duration of, in addition to protected, humbucking coils.
So why don't you instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are only an incomplete (though important!) solution. The most obvious option is to float the guitar pickup to a balanced output, as being a microphone. A similar thought was printed this 2001 patent software like this Tone Zone Pickup?