B52 Matrix 2500 A electric guitar pickup is actually similar to an energetic mike coil. For decades, powerful microphones have now been wired with the voice coil attached with the primary of the microphone's transformer, and perhaps not recommended to surface (‘floating'). The microphone's situation is usually linked to the cable shield, which will be connected to the mike amplifier's soil (see Rane's web site for more discussion).
By and big, powerful microphones are very quiet units consequently of the mixture of transformer solitude and balanced, hanging indication lines during, as well as protected, humbucking coils.
So why not guitars? Instruments are once plagued by noise. Humbucking pickups are just an incomplete (though important!) solution. The most obvious answer would be to move practicing the guitar collection to a balanced output, being a microphone. An identical idea was published that 2001 patent software such as B52 Matrix 2500?