Fender Bassman 300 A electric guitar pickup is basically much like a dynamic mike coil. For many years, powerful microphones have been wired with the style coil mounted on the primary of the microphone's transformer, and perhaps not referenced to floor (‘floating'). The microphone's situation is normally linked to the cable guard, that is attached to the microphone amplifier's ground (see Rane's web site for more discussion).
By and large, energetic microphones are very calm products consequently of the mixture of transformer isolation and balanced, floating sign lines through the duration of, in addition to protected, humbucking coils.
Therefore why don't you guitars? Instruments are notoriously overwhelmed by noise. Humbucking pickups are only a partial (though crucial!) solution. The obvious alternative would be to float practicing the guitar collection to a healthy productivity, being a microphone. A similar idea was published this 2001 patent application like this Fender Bassman 300?