Disturbed Asylum Album A best guitar pickup is actually just like a powerful mike coil. For many years, active microphones have been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not referenced to soil (‘floating'). The microphone's event is usually connected to the wire shield, which can be attached to the microphone amplifier's floor (see Rane's internet site for more discussion).
By and large, active microphones are very calm products as a result of the combination of transformer isolation and balanced, hanging sign lines throughout, as well as guarded, humbucking coils.
Therefore why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are merely an incomplete (though important!) solution. The obvious solution is always to move practicing the guitar collection to a balanced production, being a microphone. The same strategy was published this 2001 patent software such as Disturbed Asylum Album?