Fishman Neo D A best guitar pickup is essentially just like a vibrant mike coil. For decades, vibrant microphones have been wired with the voice coil mounted on the principal of the microphone's transformer, and not called to soil (‘floating'). The microphone's situation is usually linked to the cable guard, that will be attached to the microphone amplifier's ground (see Rane's internet site for more discussion).
By and large, energetic microphones are very calm products as a result of the mix of transformer isolation and healthy, floating sign lines throughout, in addition to guarded, humbucking coils.
Therefore why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just an incomplete (though crucial!) solution. The most obvious alternative is always to move the guitar pickup to a healthy output, as being a microphone. A similar strategy was published this 2001 patent request such as Fishman Neo D?