Blue Baby Bottle Microphone A guitar pickup is actually just like a dynamic mike coil. For many years, active microphones have now been sent with the voice coil attached with the principal of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's situation is typically linked to the wire guard, which is attached to the mike amplifier's floor (see Rane's site for more discussion).
By and large, energetic microphones are extremely quiet products consequently of the mixture of transformer isolation and healthy, floating transmission lines throughout, as well as protected, humbucking coils.
Therefore you will want to instruments? Instruments are once overwhelmed by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known answer is to float your guitar collection to a healthy production, just like a microphone. A similar thought was printed that 2001 patent request such as Blue Baby Bottle Microphone?