Following on from Furutech’s NCF Clear Line Mains Optimiser (HFC 478) is this new version designed to be inserted into any spare RCA socket on your equipment (XLR versions are also available). The optimiser is intended to combat the noise that can enter an audio system and find its way into the signal path. This entirely passive product contains Furutech’s NCF (Nano Crystal Formula), which is a special crystalline material intended to generate negative ions to reduce static and also convert thermal energy into far infrared.