String Size For Bass A guitar pickup is actually similar to a powerful mike coil. For decades, vibrant microphones have now been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not introduced to surface (‘floating'). The microphone's event is typically attached to the cable shield, that is linked to the microphone amplifier's ground (see Rane's internet site for more discussion).
By and big, dynamic microphones are very quiet products consequently of the combination of transformer isolation and healthy, flying indication lines all through, as well as shielded, humbucking coils.
Therefore why don't you guitars? Guitars are notoriously plagued by noise. Humbucking pickups are only a partial (though important!) solution. Well-known solution is to move practicing the guitar pickup to a balanced result, just like a microphone. A similar idea was printed this 2001 patent program such as String Size For Bass?