Gretch Hollow Body Guitars A electric guitar pickup is basically much like a powerful mike coil. For many years, energetic microphones have already been wired with the voice coil attached to the principal of the microphone's transformer, and not introduced to floor (‘floating'). The microphone's case is normally attached to the cable guard, that is connected to the mike amplifier's floor (see Rane's site for more discussion).
By and big, energetic microphones are very quiet devices consequently of the mix of transformer solitude and balanced, suspended sign lines for the duration of, along with guarded, humbucking coils.
So why not guitars? Instruments are once plagued by noise. Humbucking pickups are only a partial (though essential!) solution. The most obvious option is to float practicing the guitar pickup to a healthy productivity, as being a microphone. An identical idea was printed that 2001 patent request like this Gretch Hollow Body Guitars?