Coupon Guitar Center A electric guitar pickup is actually just like a powerful mike coil. For many years, active microphones have already been wired with the voice coil attached to the principal of the microphone's transformer, and not called to soil (‘floating'). The microphone's situation is typically connected to the cable shield, which will be attached to the microphone amplifier's floor (see Rane's site for more discussion).
By and large, powerful microphones are extremely calm devices consequently of the mix of transformer isolation and balanced, floating transmission lines for the duration of, along with guarded, humbucking coils.
So why not guitars? Guitars are notoriously plagued by noise. Humbucking pickups are just a partial (though important!) solution. The obvious answer is always to move your guitar pickup to a balanced output, as being a microphone. An identical strategy was published this 2001 patent program such as Coupon Guitar Center?