Epiphone Les Paul Plustop Pro A guitar collection is essentially much like a dynamic mike coil. For decades, active microphones have already been sent with the voice coil attached with the primary of the microphone's transformer, and not recommended to floor (‘floating'). The microphone's case is usually linked to the wire guard, that will be attached to the mike amplifier's surface (see Rane's website for more discussion).
By and large, energetic microphones are extremely quiet devices consequently of the mixture of transformer isolation and balanced, floating transmission lines throughout, in addition to shielded, humbucking coils.
So why not instruments? Guitars are notoriously affected by noise. Humbucking pickups are only a partial (though essential!) solution. The obvious solution is to float the guitar collection to a healthy result, as being a microphone. A similar idea was published that 2001 patent software like this Epiphone Les Paul Plustop Pro?