Yamaha Keyboard Amp A electric guitar collection is essentially just like an energetic microphone coil. For decades, energetic microphones have now been wired with the voice coil attached with the primary of the microphone's transformer, and maybe not referenced to floor (‘floating'). The microphone's case is normally attached to the cable guard, that is linked to the mike amplifier's ground (see Rane's site for more discussion).
By and big, vibrant microphones are extremely quiet products as a result of the combination of transformer isolation and balanced, flying indication lines for the duration of, in addition to protected, humbucking coils.
Therefore why not guitars? Guitars are once overwhelmed by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious alternative is to move your guitar pickup to a balanced result, being a microphone. A similar thought was published this 2001 patent request like this Yamaha Keyboard Amp?