Focusrite Voice Master Platinum A electric guitar pickup is basically similar to a vibrant mike coil. For many years, energetic microphones have been sent with the style coil attached with the primary of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's situation is usually linked to the cable guard, that is connected to the mike amplifier's surface (see Rane's web site for more discussion).
By and large, active microphones are very quiet devices consequently of the mixture of transformer solitude and balanced, floating transmission lines throughout, along with guarded, humbucking coils.
So why not guitars? Instruments are once affected by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. Well-known solution is to float practicing the guitar collection to a healthy productivity, being a microphone. The same strategy was published this 2001 patent application such as Focusrite Voice Master Platinum?