Jbl Vrx 928 A electric guitar collection is essentially much like an energetic microphone coil. For decades, energetic microphones have been wired with the style coil attached to the primary of the microphone's transformer, and perhaps not referenced to soil (‘floating'). The microphone's case is typically connected to the wire guard, which is connected to the mike amplifier's ground (see Rane's site for more discussion).
By and large, active microphones are very quiet products as a result of the mix of transformer solitude and balanced, flying sign lines through the duration of, as well as shielded, humbucking coils.
So why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though important!) solution. Well-known answer would be to move your guitar collection to a balanced output, being a microphone. A similar idea was published this 2001 patent software like this Jbl Vrx 928?