Crossroads Guitar Festival 2017 A guitar pickup is essentially much like a powerful mike coil. For decades, vibrant microphones have already been wired with the style coil mounted on the principal of the microphone's transformer, and not referenced to surface (‘floating'). The microphone's situation is usually attached to the cable shield, which will be connected to the microphone amplifier's floor (see Rane's website for more discussion).
By and large, vibrant microphones are extremely calm products as a result of the mix of transformer isolation and healthy, suspended indication lines throughout, as well as protected, humbucking coils.
So why not instruments? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. Well-known alternative is always to float practicing the guitar pickup to a balanced result, as being a microphone. An identical idea was printed this 2001 patent request like this Crossroads Guitar Festival 2017?