Hyper Cardiod Mic A guitar pickup is actually much like a dynamic microphone coil. For decades, active microphones have been wired with the style coil attached to the primary of the microphone's transformer, and not introduced to floor (‘floating'). The microphone's case is usually attached to the wire guard, that is connected to the mike amplifier's surface (see Rane's web site for more discussion).
By and big, dynamic microphones are very calm units consequently of the combination of transformer isolation and healthy, floating indication lines for the duration of, along with guarded, humbucking coils.
So you will want to guitars? Instruments are once overwhelmed by noise. Humbucking pickups are only an incomplete (though crucial!) solution. The obvious option would be to move your guitar pickup to a balanced productivity, being a microphone. A similar strategy was printed this 2001 patent software like this Hyper Cardiod Mic?