Seymour Duncan Shape Shifter A electric guitar collection is basically just like a dynamic mike coil. For many years, energetic microphones have now been sent with the style coil mounted on the primary of the microphone's transformer, and perhaps not recommended to soil (‘floating'). The microphone's case is usually attached to the cable guard, which will be attached to the mike amplifier's ground (see Rane's website for more discussion).
By and big, active microphones are extremely quiet products consequently of the mixture of transformer solitude and healthy, floating indication lines throughout, along with guarded, humbucking coils.
So why not guitars? Instruments are once affected by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known alternative is to move your guitar pickup to a healthy result, as being a microphone. A similar strategy was printed that 2001 patent application such as Seymour Duncan Shape Shifter?