Vintage Fender Precision Bass A guitar collection is actually similar to an energetic mike coil. For many years, powerful microphones have been sent with the voice coil attached to the primary of the microphone's transformer, and maybe not recommended to soil (‘floating'). The microphone's case is usually connected to the wire guard, that will be linked to the microphone amplifier's floor (see Rane's web site for more discussion).
By and large, energetic microphones are extremely quiet products consequently of the mix of transformer solitude and balanced, hanging transmission lines all through, in addition to protected, humbucking coils.
Therefore why not guitars? Instruments are once affected by noise. Humbucking pickups are only a partial (though essential!) solution. The obvious alternative is always to move practicing the guitar collection to a balanced output, as being a microphone. A similar idea was printed this 2001 patent program such as Vintage Fender Precision Bass?