Black Sabbath 2016 Tour A best guitar pickup is essentially similar to a vibrant mike coil. For decades, active microphones have been sent with the style coil mounted on the principal of the microphone's transformer, and not recommended to ground (‘floating'). The microphone's situation is usually attached to the cable shield, which can be attached to the microphone amplifier's ground (see Rane's website for more discussion).
By and large, vibrant microphones are extremely quiet units consequently of the mixture of transformer isolation and balanced, suspended sign lines through the duration of, as well as guarded, humbucking coils.
Therefore why don't you guitars? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The obvious solution is always to float practicing the guitar collection to a balanced output, being a microphone. An identical idea was published that 2001 patent request such as Black Sabbath 2016 Tour?