M Audio M Track Plus A electric guitar collection is essentially much like a powerful mike coil. For decades, energetic microphones have now been wired with the style coil attached with the principal of the microphone's transformer, and not introduced to ground (‘floating'). The microphone's case is typically linked to the cable shield, that will be attached to the microphone amplifier's soil (see Rane's site for more discussion).
By and big, vibrant microphones are extremely quiet products consequently of the mixture of transformer isolation and balanced, hanging indication lines through the duration of, along with protected, humbucking coils.
So why not guitars? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though important!) solution. The most obvious alternative would be to move practicing the guitar pickup to a balanced output, as being a microphone. A similar strategy was published this 2001 patent software like this M Audio M Track Plus?