Gold Locking Guitar Tuners A guitar collection is actually just like an energetic mike coil. For many years, powerful microphones have been sent with the voice coil mounted on the primary of the microphone's transformer, and not recommended to ground (‘floating'). The microphone's situation is normally attached to the cable guard, which will be attached to the mike amplifier's floor (see Rane's website for more discussion).
By and big, vibrant microphones are extremely quiet units consequently of the mix of transformer isolation and balanced, flying transmission lines throughout, in addition to shielded, humbucking coils.
So why don't you guitars? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known option is to move your guitar pickup to a healthy output, as being a microphone. The same strategy was printed that 2001 patent application such as Gold Locking Guitar Tuners?