Is Guitar Center Open On Sunday A electric guitar pickup is basically similar to a powerful microphone coil. For decades, powerful microphones have been sent with the style coil mounted on the primary of the microphone's transformer, and maybe not recommended to surface (‘floating'). The microphone's situation is typically attached to the cable guard, which will be attached to the microphone amplifier's soil (see Rane's website for more discussion).
By and large, vibrant microphones are extremely quiet devices consequently of the combination of transformer isolation and healthy, flying indication lines all through, as well as shielded, humbucking coils.
Therefore why not instruments? Guitars are once overwhelmed by noise. Humbucking pickups are only an incomplete (though essential!) solution. The most obvious solution is to float the guitar collection to a balanced output, being a microphone. A similar strategy was published this 2001 patent program such as Is Guitar Center Open On Sunday?