Sergeants Peppers Lonely Hearts A best guitar pickup is actually just like an energetic microphone coil. For many years, powerful microphones have been wired with the voice coil mounted on the primary of the microphone's transformer, and perhaps not referenced to surface (‘floating'). The microphone's case is typically attached to the wire shield, which will be linked to the mike amplifier's ground (see Rane's site for more discussion).
By and big, dynamic microphones are extremely quiet products as a result of the mixture of transformer isolation and balanced, floating sign lines all through, along with shielded, humbucking coils.
Therefore why not instruments? Guitars are once plagued by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The most obvious alternative would be to move your guitar pickup to a balanced result, being a microphone. The same strategy was printed this 2001 patent request such as Sergeants Peppers Lonely Hearts?