Guild Parlor Guitar A guitar collection is essentially much like a powerful microphone coil. For many years, vibrant microphones have been sent with the voice coil attached with the principal of the microphone's transformer, and maybe not referenced to floor (‘floating'). The microphone's situation is usually attached to the wire shield, which can be attached to the mike amplifier's floor (see Rane's site for more discussion).
By and big, active microphones are extremely quiet products consequently of the mixture of transformer isolation and balanced, floating sign lines all through, as well as shielded, humbucking coils.
Therefore why don't you instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though important!) solution. The obvious answer is always to move the guitar pickup to a healthy production, as being a microphone. A similar strategy was published that 2001 patent software like this Guild Parlor Guitar?