4channel Power Amplifier A guitar collection is basically similar to a dynamic microphone coil. For many years, vibrant microphones have now been wired with the voice coil attached with the principal of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's situation is normally attached to the wire guard, which can be connected to the mike amplifier's surface (see Rane's site for more discussion).
By and big, powerful microphones are extremely quiet devices as a result of the mixture of transformer isolation and healthy, flying sign lines all through, in addition to guarded, humbucking coils.
So why don't you guitars? Guitars are notoriously plagued by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known option is always to float the guitar collection to a balanced output, as being a microphone. An identical thought was published this 2001 patent application like this 4channel Power Amplifier?