Mini Guitar Heads A guitar collection is actually just like a dynamic microphone coil. For many years, dynamic microphones have been wired with the style coil attached to the primary of the microphone's transformer, and maybe not introduced to soil (‘floating'). The microphone's situation is normally linked to the cable shield, which is linked to the microphone amplifier's surface (see Rane's site for more discussion).
By and large, active microphones are very quiet products consequently of the mix of transformer isolation and balanced, flying indication lines all through, as well as guarded, humbucking coils.
Therefore why not instruments? Guitars are notoriously affected by noise. Humbucking pickups are just a partial (though important!) solution. The most obvious alternative is always to float practicing the guitar collection to a balanced result, just like a microphone. The same thought was printed that 2001 patent request such as Mini Guitar Heads?