Spalted Maple Guitars A best guitar collection is essentially similar to a dynamic microphone coil. For decades, powerful microphones have already been sent with the voice coil mounted on the primary of the microphone's transformer, and perhaps not referenced to ground (‘floating'). The microphone's case is normally linked to the cable shield, that will be connected to the mike amplifier's ground (see Rane's site for more discussion).
By and big, active microphones are extremely quiet units consequently of the mix of transformer isolation and balanced, hanging sign lines throughout, along with shielded, humbucking coils.
So why not guitars? Instruments are once overwhelmed by noise. Humbucking pickups are only a partial (though important!) solution. Well-known answer is to float practicing the guitar collection to a healthy productivity, being a microphone. A similar idea was printed this 2001 patent program like this Spalted Maple Guitars?