Fender American P Bass A best guitar pickup is basically similar to a powerful mike coil. For decades, dynamic microphones have already been wired with the voice coil attached to the primary of the microphone's transformer, and not recommended to floor (‘floating'). The microphone's case is usually linked to the wire shield, which will be linked to the microphone amplifier's soil (see Rane's web site for more discussion).
By and big, active microphones are very quiet products as a result of the combination of transformer isolation and balanced, floating sign lines for the duration of, as well as guarded, humbucking coils.
Therefore you will want to guitars? Instruments are notoriously plagued by noise. Humbucking pickups are only an incomplete (though important!) solution. The obvious alternative is always to float the guitar collection to a balanced production, as being a microphone. A similar thought was printed this 2001 patent program like this Fender American P Bass?