Kawai Cn24 Digital Piano A electric guitar pickup is actually similar to an energetic microphone coil. For decades, powerful microphones have already been sent with the voice coil mounted on the primary of the microphone's transformer, and perhaps not recommended to surface (‘floating'). The microphone's case is usually connected to the wire shield, which is connected to the mike amplifier's soil (see Rane's site for more discussion).
By and large, dynamic microphones are very quiet devices as a result of the mix of transformer solitude and balanced, floating sign lines all through, along with guarded, humbucking coils.
So you will want to guitars? Guitars are once plagued by noise. Humbucking pickups are only a partial (though important!) solution. The obvious answer would be to float the guitar pickup to a balanced output, as being a microphone. An identical strategy was published that 2001 patent request like this Kawai Cn24 Digital Piano?