Keyboard Amp Manufacturers A best guitar pickup is basically much like an energetic microphone coil. For decades, vibrant microphones have now been wired with the style coil attached to the primary of the microphone's transformer, and perhaps not recommended to ground (‘floating'). The microphone's case is typically linked to the wire guard, which is attached to the microphone amplifier's soil (see Rane's site for more discussion).
By and large, active microphones are extremely quiet products as a result of the mix of transformer solitude and balanced, floating sign lines throughout, along with protected, humbucking coils.
So why don't you guitars? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. The most obvious answer is to float practicing the guitar pickup to a healthy output, just like a microphone. An identical strategy was published this 2001 patent request like this Keyboard Amp Manufacturers?