Digital Mixer Home Studio A guitar collection is essentially just like an energetic microphone coil. For decades, vibrant microphones have now been wired with the voice coil mounted on the principal of the microphone's transformer, and perhaps not called to ground (‘floating'). The microphone's situation is normally attached to the wire shield, which will be attached to the microphone amplifier's soil (see Rane's site for more discussion).
By and big, dynamic microphones are extremely calm products as a result of the combination of transformer isolation and healthy, flying transmission lines all through, along with shielded, humbucking coils.
So why not instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The obvious answer is to move your guitar collection to a healthy output, just like a microphone. The same idea was published that 2001 patent application such as Digital Mixer Home Studio?