Motu Traveler Mk3 A electric guitar collection is actually just like a vibrant microphone coil. For decades, energetic microphones have already been wired with the voice coil attached with the primary of the microphone's transformer, and not recommended to soil (‘floating'). The microphone's case is normally connected to the cable shield, that will be attached to the mike amplifier's floor (see Rane's web site for more discussion).
By and big, vibrant microphones are very calm devices consequently of the mix of transformer isolation and balanced, flying transmission lines throughout, in addition to protected, humbucking coils.
Therefore why not guitars? Instruments are notoriously affected by noise. Humbucking pickups are merely a partial (though essential!) solution. The obvious solution is always to move the guitar pickup to a healthy output, as being a microphone. An identical idea was printed that 2001 patent program like this Motu Traveler Mk3?