Oscar Smith Guitar A guitar collection is essentially just like a vibrant mike coil. For many years, active microphones have now been sent with the voice coil mounted on the primary of the microphone's transformer, and not introduced to ground (‘floating'). The microphone's case is typically attached to the wire shield, which is attached to the mike amplifier's floor (see Rane's web site for more discussion).
By and big, active microphones are very quiet devices as a result of the mixture of transformer isolation and healthy, floating sign lines during, as well as shielded, humbucking coils.
Therefore why not guitars? Instruments are notoriously plagued by noise. Humbucking pickups are merely an incomplete (though essential!) solution. Well-known solution would be to float your guitar collection to a healthy production, as being a microphone. A similar strategy was printed this 2001 patent software such as Oscar Smith Guitar?