Midi Controller Alesis Q49 A guitar pickup is basically just like a powerful microphone coil. For decades, vibrant microphones have now been sent with the voice coil attached with the primary of the microphone's transformer, and not introduced to surface (‘floating'). The microphone's event is normally attached to the cable shield, that will be linked to the mike amplifier's ground (see Rane's website for more discussion).
By and big, powerful microphones are very quiet devices as a result of the combination of transformer isolation and balanced, suspended sign lines for the duration of, as well as guarded, humbucking coils.
Therefore why not instruments? Instruments are once plagued by noise. Humbucking pickups are merely an incomplete (though essential!) solution. Well-known answer is to float the guitar pickup to a healthy production, just like a microphone. The same strategy was printed that 2001 patent software such as Midi Controller Alesis Q49?