Old 60s Song A best guitar collection is basically similar to an energetic mike coil. For decades, powerful microphones have been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not recommended to soil (‘floating'). The microphone's case is normally linked to the cable guard, that will be connected to the mike amplifier's floor (see Rane's site for more discussion).
By and big, powerful microphones are extremely quiet devices consequently of the mix of transformer solitude and healthy, floating indication lines during, along with protected, humbucking coils.
Therefore why not instruments? Guitars are once plagued by noise. Humbucking pickups are just a partial (though crucial!) solution. Well-known answer is to float practicing the guitar pickup to a balanced productivity, as being a microphone. The same strategy was printed that 2001 patent program such as Old 60s Song?