Gibson Les Paul Reissue A guitar pickup is actually similar to an energetic mike coil. For many years, active microphones have 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 case is typically connected to the cable shield, which can be connected to the mike amplifier's surface (see Rane's website for more discussion).
By and big, active microphones are very quiet units as a result of the mixture of transformer isolation and balanced, suspended sign lines all through, in addition to protected, humbucking coils.
So you will want to guitars? Guitars are once affected by noise. Humbucking pickups are only a partial (though essential!) solution. The obvious answer is always to move the guitar collection to a balanced output, as being a microphone. A similar idea was published that 2001 patent software like this Gibson Les Paul Reissue?