Disco Ball Motor A best guitar pickup is essentially just like a powerful microphone coil. For decades, powerful microphones have now been wired with the style coil mounted on the principal of the microphone's transformer, and maybe not introduced to soil (‘floating'). The microphone's event is usually attached to the wire shield, that will be linked to the mike amplifier's ground (see Rane's site for more discussion).
By and big, active microphones are very calm products as a result of the mix of transformer solitude and balanced, hanging transmission lines for the duration of, as well as protected, humbucking coils.
So why don't you instruments? Guitars are notoriously affected by noise. Humbucking pickups are just a partial (though essential!) solution. The obvious solution would be to float practicing the guitar pickup to a balanced output, just like a microphone. The same thought was published that 2001 patent program such as Disco Ball Motor?