Focusrite Scarlet 2i2 A electric guitar collection is essentially just like an energetic microphone coil. For decades, dynamic microphones have now been wired with the voice coil attached with the primary of the microphone's transformer, and maybe not recommended to soil (‘floating'). The microphone's event is typically attached to the cable shield, which is connected to the mike amplifier's surface (see Rane's web site for more discussion).
By and large, energetic microphones are very calm units as a result of the mix of transformer isolation and balanced, flying indication lines throughout, in addition to guarded, humbucking coils.
So why not instruments? Guitars are once affected by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The obvious solution would be to float practicing the guitar pickup to a balanced productivity, being a microphone. A similar strategy was printed this 2001 patent program like this Focusrite Scarlet 2i2?