Pioneer Plx 1000 Turntables A guitar pickup is actually much like a powerful microphone coil. For decades, vibrant microphones have now been wired with the voice coil attached to the principal of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's event is usually linked to the wire guard, that is connected to the mike amplifier's soil (see Rane's site for more discussion).
By and large, vibrant microphones are very calm devices as a result of the mix of transformer isolation and healthy, hanging transmission lines during, in addition to protected, humbucking coils.
Therefore why not guitars? Instruments are notoriously affected by noise. Humbucking pickups are only an incomplete (though important!) solution. The obvious answer is to float your guitar collection to a healthy output, being a microphone. An identical idea was printed this 2001 patent software such as Pioneer Plx 1000 Turntables?