Squier Vintage Modified Pj Bass A best guitar collection is essentially much like a vibrant microphone coil. For decades, powerful microphones have now been wired with the voice coil attached with the primary of the microphone's transformer, and not introduced to soil (‘floating'). The microphone's event is normally attached to the wire shield, that will be attached to the mike amplifier's floor (see Rane's site for more discussion).
By and big, vibrant microphones are very quiet units consequently of the mix of transformer isolation and balanced, hanging transmission lines throughout, as well as guarded, humbucking coils.
So why don't you guitars? Instruments are notoriously affected by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious answer would be to float the guitar pickup to a healthy result, just like a microphone. A similar idea was published this 2001 patent program like this Squier Vintage Modified Pj Bass?