M Audio Keystation 49 Mk3 Midi Controller A electric guitar collection is essentially similar to a powerful microphone coil. For decades, active microphones have already been wired with the voice coil mounted on the primary of the microphone's transformer, and perhaps not referenced to ground (‘floating'). The microphone's situation is normally attached to the wire shield, that will be connected to the microphone amplifier's floor (see Rane's website for more discussion).
By and big, active microphones are extremely quiet devices as a result of the mixture of transformer isolation and balanced, suspended indication lines during, in addition to shielded, humbucking coils.
Therefore why not instruments? Guitars are once overwhelmed by noise. Humbucking pickups are just a partial (though crucial!) solution. The obvious option is always to move practicing the guitar collection to a balanced output, just like a microphone. The same idea was printed that 2001 patent request such as M Audio Keystation 49 Mk3 Midi Controller?