Electro Harmonix Pulsar A best guitar pickup is actually just like an energetic microphone coil. For many years, energetic microphones have now been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not referenced to soil (‘floating'). The microphone's event is normally linked to the wire shield, which will be linked to the mike amplifier's ground (see Rane's internet site for more discussion).
By and big, energetic microphones are very calm products consequently of the mixture of transformer isolation and balanced, flying transmission lines during, as well as shielded, humbucking coils.
So why not instruments? Guitars are once affected by noise. Humbucking pickups are just a partial (though crucial!) solution. The obvious alternative would be to move your guitar pickup to a balanced output, as being a microphone. The same idea was published that 2001 patent program such as Electro Harmonix Pulsar?