Guitars On Sale A guitar pickup is basically just like a dynamic mike coil. For many years, powerful microphones have now been sent with the voice coil mounted on the principal of the microphone's transformer, and maybe not recommended to surface (‘floating'). The microphone's case is typically attached to the cable shield, which is attached to the microphone amplifier's ground (see Rane's site for more discussion).
By and big, energetic microphones are very quiet products as a result of the mixture of transformer isolation and balanced, floating transmission lines throughout, along with protected, humbucking coils.
So you will want to guitars? Instruments are notoriously affected by noise. Humbucking pickups are merely a partial (though important!) solution. Well-known alternative would be to move the guitar collection to a healthy output, as being a microphone. The same thought was printed this 2001 patent request like this Guitars On Sale?