Blue Spark Condenser Mic A best guitar pickup is basically just like a vibrant mike coil. For decades, dynamic microphones have already been sent with the voice coil attached with the primary of the microphone's transformer, and not recommended to soil (‘floating'). The microphone's event is normally connected to the wire guard, that will be linked to the microphone amplifier's floor (see Rane's website for more discussion).
By and big, energetic microphones are very quiet devices consequently of the mix of transformer solitude and balanced, flying sign lines all through, along with protected, humbucking coils.
Therefore why don't you instruments? Instruments are notoriously affected by noise. Humbucking pickups are only an incomplete (though essential!) solution. The most obvious answer is always to float the guitar pickup to a healthy production, being a microphone. The same strategy was published that 2001 patent program like this Blue Spark Condenser Mic?