Trombone Music Book A electric guitar pickup is basically just like a powerful microphone coil. For decades, dynamic microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and maybe not introduced to ground (‘floating'). The microphone's event is typically connected to the wire shield, which can be linked to the mike amplifier's surface (see Rane's website for more discussion).
By and large, energetic microphones are extremely quiet devices consequently of the mix of transformer isolation and balanced, floating indication lines during, as well as guarded, humbucking coils.
So you will want to instruments? Instruments are notoriously plagued by noise. Humbucking pickups are just a partial (though important!) solution. Well-known answer is to move the guitar pickup to a balanced output, being a microphone. A similar strategy was published that 2001 patent application such as Trombone Music Book?