Casio Piano Digital Lk 135 A electric guitar collection is essentially much like a powerful microphone coil. For decades, powerful microphones have been wired with the style coil mounted on the primary of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's situation is typically attached to the wire shield, which can be connected to the microphone amplifier's soil (see Rane's web site for more discussion).
By and big, powerful microphones are very calm devices as a result of the mix of transformer solitude and balanced, floating transmission lines through the duration of, in addition to guarded, humbucking coils.
So why not instruments? Guitars are notoriously plagued by noise. Humbucking pickups are merely a partial (though crucial!) solution. The most obvious option would be to move your guitar collection to a healthy output, being a microphone. The same thought was published that 2001 patent software like this Casio Piano Digital Lk 135?