Is Guitar Center Open Today A electric guitar pickup is essentially just like an energetic microphone coil. For many years, active microphones have already been wired with the voice coil mounted on the primary of the microphone's transformer, and perhaps not recommended to floor (‘floating'). The microphone's event is usually attached to the cable shield, which will be attached to the microphone amplifier's soil (see Rane's site for more discussion).
By and large, energetic microphones are extremely quiet units consequently of the mix of transformer isolation and balanced, hanging sign lines throughout, along with guarded, humbucking coils.
So why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. The most obvious option is to move the guitar collection to a healthy output, just like a microphone. A similar thought was published that 2001 patent application like this Is Guitar Center Open Today?