Best Mechanical Wired Keyboard A electric guitar pickup is basically much like a vibrant microphone coil. For decades, energetic microphones have now been sent with the voice coil attached with the primary of the microphone's transformer, and not introduced to floor (‘floating'). The microphone's case is usually connected to the cable guard, which can be linked to the microphone amplifier's soil (see Rane's site for more discussion).
By and big, dynamic microphones are extremely quiet devices as a result of the mix of transformer isolation and healthy, hanging indication lines during, as well as protected, humbucking coils.
So why don't you guitars? Instruments are notoriously plagued by noise. Humbucking pickups are just an incomplete (though crucial!) solution. The obvious option is to float the guitar pickup to a balanced production, as being a microphone. A similar strategy was printed this 2001 patent program such as Best Mechanical Wired Keyboard?