Jbl Eon G2 A guitar collection is basically similar to a powerful microphone coil. For decades, powerful microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and perhaps not introduced to floor (‘floating'). The microphone's event is usually linked to the wire shield, which can be attached to the microphone amplifier's soil (see Rane's site for more discussion).
By and big, powerful microphones are very quiet products consequently of the mix of transformer isolation and balanced, hanging sign lines through the duration of, in addition to guarded, humbucking coils.
Therefore why don't you instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely a partial (though essential!) solution. Well-known solution would be to move practicing the guitar pickup to a healthy production, being a microphone. A similar idea was published that 2001 patent software like this Jbl Eon G2?