Prs Se Paul Allender A best guitar pickup is actually much like a vibrant microphone coil. For many years, dynamic microphones have now been sent with the style coil attached with the principal of the microphone's transformer, and maybe not recommended to surface (‘floating'). The microphone's case is typically attached to the cable guard, which is attached to the mike amplifier's ground (see Rane's site for more discussion).
By and large, active microphones are very quiet devices consequently of the mix of transformer isolation and balanced, floating transmission lines for the duration of, as well as protected, humbucking coils.
Therefore why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely a partial (though important!) solution. The obvious alternative is always to move the guitar collection to a healthy output, as being a microphone. An identical idea was published that 2001 patent application like this Prs Se Paul Allender?