D Addario Capo A guitar collection is basically just like an energetic microphone coil. For decades, energetic microphones have already been sent with the voice coil attached to the principal of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's situation is typically attached to the wire guard, that is attached to the microphone amplifier's surface (see Rane's site for more discussion).
By and large, powerful microphones are very quiet units as a result of the combination of transformer solitude and healthy, floating sign lines during, along with protected, humbucking coils.
Therefore why not guitars? Instruments are notoriously overwhelmed by noise. Humbucking pickups are only a partial (though important!) solution. The obvious answer would be to move practicing the guitar collection to a healthy productivity, being a microphone. An identical idea was published that 2001 patent application such as D Addario Capo?