Nord Lead 4 A guitar collection is basically just like a dynamic mike coil. For many years, vibrant microphones have already been sent with the voice coil attached to the principal of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's situation is normally connected to the wire guard, which can be connected to the mike amplifier's surface (see Rane's web site for more discussion).
By and large, active microphones are extremely calm units consequently of the mix of transformer isolation and balanced, floating indication lines throughout, in addition to shielded, humbucking coils.
Therefore why don't you instruments? Instruments are notoriously plagued by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known solution is to float the guitar pickup to a healthy production, being a microphone. The same thought was published this 2001 patent request such as Nord Lead 4?