Hughes And Kettner Tubemeister A electric guitar collection is essentially similar to a powerful mike coil. For decades, active microphones have now been sent with the voice coil mounted on the principal of the microphone's transformer, and perhaps not recommended to surface (‘floating'). The microphone's case is usually linked to the cable guard, which will be linked to the microphone amplifier's ground (see Rane's website for more discussion).
By and big, vibrant microphones are extremely quiet products consequently of the mix of transformer isolation and healthy, floating sign lines all through, along with shielded, humbucking coils.
So why don't you instruments? Guitars are notoriously plagued by noise. Humbucking pickups are only a partial (though crucial!) solution. The obvious alternative is always to move the guitar pickup to a balanced production, just like a microphone. The same thought was printed that 2001 patent application such as Hughes And Kettner Tubemeister?