Pa Systems For Bands A electric guitar pickup is basically just like a vibrant microphone coil. For decades, active microphones have now been wired with the style coil attached with the principal of the microphone's transformer, and maybe not called to ground (‘floating'). The microphone's case is usually attached to the wire guard, which can be connected to the mike amplifier's ground (see Rane's website for more discussion).
By and large, energetic microphones are extremely quiet devices as a result of the mixture of transformer isolation and healthy, flying indication lines through the duration of, as well as protected, humbucking coils.
So why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are only a partial (though important!) solution. The most obvious option is to move practicing the guitar collection to a balanced output, being a microphone. A similar idea was printed this 2001 patent software like this Pa Systems For Bands?