Behringer 18 Sub A electric guitar pickup is essentially just like a powerful microphone coil. For many years, powerful microphones have been wired with the style coil attached to the primary of the microphone's transformer, and maybe not introduced to ground (‘floating'). The microphone's situation is usually attached to the wire guard, which can be connected to the mike amplifier's ground (see Rane's internet site for more discussion).
By and big, energetic microphones are very quiet devices as a result of the combination of transformer isolation and healthy, suspended indication lines throughout, as well as protected, humbucking coils.
So you will want to instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely a partial (though essential!) solution. The most obvious option is to float your guitar collection to a balanced output, just like a microphone. The same strategy was printed this 2001 patent program like this Behringer 18 Sub?