Powered Monitor Speaker A guitar pickup is actually much like a powerful mike coil. For decades, powerful microphones have already been sent with the voice coil attached with the primary of the microphone's transformer, and not called to surface (‘floating'). The microphone's case is usually connected to the wire guard, which will be connected to the microphone amplifier's ground (see Rane's web site for more discussion).
By and large, dynamic microphones are extremely calm products as a result of the mix of transformer isolation and healthy, hanging sign lines during, along with guarded, humbucking coils.
So why don't you guitars? Instruments are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. The most obvious answer is always to move your guitar pickup to a balanced productivity, being a microphone. A similar strategy was published that 2001 patent program such as Powered Monitor Speaker?