Fiddle For Sale A guitar pickup is basically much like an energetic microphone coil. For decades, powerful microphones have been sent with the voice coil mounted on the principal of the microphone's transformer, and perhaps not introduced to soil (‘floating'). The microphone's case is normally attached to the wire guard, that is linked to the mike amplifier's ground (see Rane's web site for more discussion).
By and large, vibrant microphones are very quiet units as a result of the mix of transformer solitude and healthy, suspended transmission lines throughout, in addition to shielded, humbucking coils.
Therefore why don't you instruments? Guitars are notoriously plagued by noise. Humbucking pickups are merely a partial (though essential!) solution. The obvious option is always to float the guitar collection to a healthy result, just like a microphone. The same thought was printed this 2001 patent application like this Fiddle For Sale?