Coils Splitting Pickup: This is a humbucking pickup with two magnets and two coils. When the single is "cut" (which can be accomplished with a gear dial, push/pull knob, gear key, etc.) the two coils are disconnected, leaving only one coil working. When the single is cut, the original noise removal function disappears, with the advantage that it allows for a greater variety of guitar styles, usually using humbuckers for brighter, punchier tones and single coils for softer, fuller tones.