Metal Guitar Picks A best guitar pickup is basically just like a dynamic microphone coil. For decades, energetic microphones have now been wired with the voice coil mounted on the principal of the microphone's transformer, and perhaps not referenced to ground (‘floating'). The microphone's case is usually attached to the wire guard, that is connected to the microphone amplifier's ground (see Rane's site for more discussion).
By and big, dynamic microphones are very quiet units consequently of the combination of transformer isolation and balanced, suspended transmission lines all through, in addition to protected, humbucking coils.
So why don't you instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The obvious option is to move your guitar pickup to a balanced result, as being a microphone. An identical idea was published this 2001 patent software like this Metal Guitar Picks?