Bass Guitar String Action Height A electric guitar pickup is actually much like a powerful mike coil. For many years, energetic microphones have been sent with the voice coil attached to the primary of the microphone's transformer, and maybe not called to soil (‘floating'). The microphone's event is usually linked to the cable guard, which can be connected to the microphone amplifier's soil (see Rane's web site for more discussion).
By and big, dynamic microphones are extremely quiet products consequently of the combination of transformer isolation and balanced, suspended sign lines during, along with guarded, humbucking coils.
Therefore why not instruments? Instruments are notoriously plagued by noise. Humbucking pickups are just a partial (though crucial!) solution. The obvious solution would be to float the guitar pickup to a healthy production, as being a microphone. A similar idea was printed that 2001 patent software such as Bass Guitar String Action Height?