Midi Controller 61 Key A guitar collection is actually similar to a dynamic microphone coil. For many years, energetic microphones have now been sent with the voice coil attached to the primary of the microphone's transformer, and not referenced to ground (‘floating'). The microphone's case is typically attached to the wire guard, which can be connected to the microphone amplifier's floor (see Rane's web site for more discussion).
By and big, vibrant microphones are very calm products consequently of the combination of transformer solitude and balanced, suspended indication lines all through, in addition to protected, humbucking coils.
Therefore why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely an incomplete (though important!) solution. The most obvious alternative is always to move the guitar pickup to a healthy output, being a microphone. An identical thought was printed this 2001 patent program such as Midi Controller 61 Key?