Selling Musical Equipment A guitar collection is essentially much like a powerful microphone coil. For many years, powerful microphones have been sent with the voice coil attached with the primary of the microphone's transformer, and perhaps not referenced to soil (‘floating'). The microphone's case is normally attached to the wire guard, that will be linked to the microphone amplifier's floor (see Rane's web site for more discussion).
By and large, active microphones are very quiet products consequently of the combination of transformer isolation and healthy, suspended indication lines all through, in addition to guarded, humbucking coils.
Therefore why don't you guitars? Guitars are notoriously affected by noise. Humbucking pickups are only a partial (though essential!) solution. The obvious answer is to float your guitar collection to a healthy productivity, just like a microphone. A similar thought was published this 2001 patent request like this Selling Musical Equipment?