Inno Pocket Z4 A guitar pickup is actually similar to an energetic microphone coil. For decades, vibrant microphones have already been wired with the voice coil attached with the primary of the microphone's transformer, and maybe not referenced to soil (‘floating'). The microphone's event is typically attached to the cable shield, that will be linked to the microphone amplifier's surface (see Rane's internet site for more discussion).
By and big, active microphones are very quiet products consequently of the mixture of transformer solitude and healthy, hanging indication lines throughout, as well as shielded, humbucking coils.
Therefore why not guitars? Instruments are once overwhelmed by noise. Humbucking pickups are only a partial (though important!) solution. The most obvious solution is always to float your guitar pickup to a balanced production, just like a microphone. The same thought was printed that 2001 patent request like this Inno Pocket Z4?