Sennheiser Hd 800 A best guitar pickup is actually much like a powerful microphone coil. For many years, energetic microphones have already been sent with the voice coil attached with the principal of the microphone's transformer, and not called to ground (‘floating'). The microphone's situation is typically attached to the wire guard, which is connected to the microphone amplifier's ground (see Rane's website for more discussion).
By and big, energetic microphones are extremely calm devices consequently of the mixture of transformer isolation and balanced, hanging indication lines for the duration of, as well as shielded, humbucking coils.
Therefore why don't you guitars? Instruments are once affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. The obvious option is always to move the guitar collection to a healthy result, as being a microphone. A similar strategy was printed that 2001 patent application such as Sennheiser Hd 800?