This Is Spinal Tap Full Movie A best guitar pickup is essentially just like a powerful mike coil. For many years, active microphones have already been sent with the voice coil attached with the principal of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's event is normally connected to the cable guard, which can be attached to the mike amplifier's soil (see Rane's web site for more discussion).
By and big, active microphones are extremely calm products consequently of the mixture of transformer isolation and balanced, floating sign lines through the duration of, in addition to guarded, humbucking coils.
Therefore why not guitars? Instruments are once plagued by noise. Humbucking pickups are just a partial (though crucial!) solution. The most obvious alternative is to float your guitar pickup to a healthy output, just like a microphone. A similar thought was published this 2001 patent request such as This Is Spinal Tap Full Movie?