Chord Bass 5 String A guitar pickup is essentially much like a vibrant microphone coil. For decades, dynamic microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and not referenced to floor (‘floating'). The microphone's situation is usually linked to the cable shield, that is linked to the microphone amplifier's floor (see Rane's website for more discussion).
By and large, vibrant microphones are extremely quiet devices as a result of the mix of transformer isolation and balanced, flying indication lines throughout, along with shielded, humbucking coils.
So you will want to instruments? Instruments are notoriously affected by noise. Humbucking pickups are just a partial (though essential!) solution. The obvious alternative is to float the guitar collection to a balanced result, being a microphone. A similar idea was published this 2001 patent program such as Chord Bass 5 String?