Midi Controller Piano A best guitar pickup is actually just like a vibrant microphone coil. For many years, energetic microphones have now been sent with the style coil mounted on the principal of the microphone's transformer, and perhaps not recommended to ground (‘floating'). The microphone's event is typically linked to the wire guard, which will be linked to the mike amplifier's floor (see Rane's website for more discussion).
By and big, dynamic microphones are very quiet products consequently of the combination of transformer isolation and balanced, flying sign lines all through, as well as protected, humbucking coils.
Therefore why not instruments? Guitars are notoriously plagued by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious option would be to move your guitar pickup to a balanced productivity, just like a microphone. The same strategy was printed this 2001 patent request like this Midi Controller Piano?