M Audio Axiom 25 Usb Midi Controller A best guitar collection is actually similar to a vibrant mike coil. For decades, active microphones have now been wired with the voice coil mounted on the primary of the microphone's transformer, and maybe not called to soil (‘floating'). The microphone's case is typically connected to the cable shield, that will be linked to the microphone amplifier's surface (see Rane's website for more discussion).
By and big, active microphones are very quiet products consequently of the combination of transformer solitude and healthy, floating transmission lines throughout, along with shielded, humbucking coils.
So why don't you instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely a partial (though important!) solution. The most obvious alternative is always to move the guitar collection to a healthy output, as being a microphone. A similar strategy was published this 2001 patent application such as M Audio Axiom 25 Usb Midi Controller?