Roland Cube Bass Amp A electric guitar pickup is actually just like an energetic microphone coil. For decades, powerful microphones have been sent with the style coil mounted on the primary of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's event is usually connected to the cable shield, which is connected to the mike amplifier's ground (see Rane's web site for more discussion).
By and big, dynamic microphones are extremely calm units as a result of the mix of transformer isolation and healthy, flying transmission lines for the duration of, in addition to protected, humbucking coils.
So why not guitars? Guitars are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though important!) solution. The obvious option is to float the guitar pickup to a healthy production, as being a microphone. An identical idea was printed this 2001 patent program such as Roland Cube Bass Amp?