Blueridge Br 140 A electric guitar collection is essentially much like a powerful mike coil. For decades, energetic microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and maybe not introduced to floor (‘floating'). The microphone's situation is typically linked to the wire guard, that is linked to the microphone amplifier's ground (see Rane's site for more discussion).
By and large, energetic microphones are very calm devices consequently of the mix of transformer isolation and healthy, floating sign lines for the duration of, in addition to shielded, humbucking coils.
Therefore why not instruments? Guitars are notoriously plagued by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known alternative would be to move your guitar collection to a balanced output, being a microphone. An identical idea was printed this 2001 patent application like this Blueridge Br 140?