Keyboard Amp Reviews A electric guitar collection is actually much like an energetic microphone coil. For many years, vibrant microphones have now been wired with the style coil attached to the primary of the microphone's transformer, and perhaps not referenced to ground (‘floating'). The microphone's event is usually linked to the cable shield, that is connected to the mike amplifier's surface (see Rane's site for more discussion).
By and big, active microphones are extremely quiet products as a result of the mix of transformer isolation and balanced, hanging transmission lines for the duration of, in addition to protected, humbucking coils.
Therefore why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are only a partial (though important!) solution. The most obvious solution is always to float your guitar pickup to a balanced result, as being a microphone. A similar strategy was printed this 2001 patent request such as Keyboard Amp Reviews?