Digitech Trio Plus A electric guitar pickup is actually similar to a vibrant mike coil. For decades, energetic microphones have already been sent with the voice coil mounted on the principal of the microphone's transformer, and maybe not recommended to ground (‘floating'). The microphone's event is normally attached to the cable guard, which is linked to the microphone amplifier's soil (see Rane's website for more discussion).
By and big, vibrant microphones are extremely calm devices as a result of the mix of transformer isolation and balanced, suspended indication lines through the duration of, as well as shielded, humbucking coils.
Therefore why don't you instruments? Instruments are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. The most obvious solution is always to move the guitar pickup to a balanced production, just like a microphone. The same strategy was published that 2001 patent application such as Digitech Trio Plus?