Qr60 Wired Keyboard A guitar pickup is essentially much like a vibrant microphone coil. For many years, energetic microphones have been sent with the voice coil attached to the principal of the microphone's transformer, and maybe not recommended to surface (‘floating'). The microphone's case is usually attached to the cable shield, which will be attached to the microphone amplifier's surface (see Rane's site for more discussion).
By and large, active microphones are very quiet units consequently of the mix of transformer solitude and balanced, hanging transmission lines throughout, as well as shielded, humbucking coils.
Therefore why not guitars? Guitars are notoriously overwhelmed by noise. Humbucking pickups are merely a partial (though important!) solution. The obvious alternative is always to float practicing the guitar collection to a healthy result, being a microphone. An identical idea was published this 2001 patent request like this Qr60 Wired Keyboard?