Pioneer Turntables Plx1000 A best guitar pickup is basically similar to a powerful microphone coil. For decades, energetic microphones have been wired with the voice coil attached to the primary of the microphone's transformer, and not referenced to surface (‘floating'). The microphone's situation is usually linked to the wire guard, that is connected to the microphone amplifier's surface (see Rane's site for more discussion).
By and large, dynamic microphones are extremely quiet units as a result of the mix of transformer solitude and healthy, flying sign lines during, as well as protected, humbucking coils.
Therefore why don't you instruments? Guitars are notoriously plagued by noise. Humbucking pickups are only a partial (though important!) solution. The most obvious alternative is always to float practicing the guitar pickup to a balanced output, being a microphone. The same thought was printed that 2001 patent application such as Pioneer Turntables Plx1000?