Dunlop Cry Baby A best guitar pickup is essentially similar to a powerful microphone coil. For many years, dynamic microphones have been wired with the style coil mounted on the principal of the microphone's transformer, and perhaps not introduced to surface (‘floating'). The microphone's event is normally linked to the cable shield, that will be attached to the mike amplifier's soil (see Rane's web site for more discussion).
By and big, powerful microphones are extremely quiet units as a result of the mixture of transformer solitude and balanced, hanging sign lines during, along with guarded, humbucking coils.
So why don't you guitars? Instruments are once plagued by noise. Humbucking pickups are merely an incomplete (though important!) solution. The obvious option would be to float practicing the guitar collection to a balanced production, being a microphone. The same idea was printed this 2001 patent application such as Dunlop Cry Baby?