Ultimate With the Ultimate cable Puritan took the antivibration distortion materials and engineering techniques to a whole higher level at the same time as upping the conductor gauge to a whopping 41Amps current capacity and as a crowning glory; they developed a new nanotechnology based magnetic screen applied in addition to the carbon RFI screen present on the Classic to give much enhanced EMI performance. Normally used copper braid, copper foil, aluminium foil or metallised Mylar foil RFI screens do not block the magnetic elements of EMI (Electromagnetic Interference). Puritan do! They also separated the earth cable and applied a further proprietary special treatment along its length that cleanses out pollution in the earth path.