Furutech NCF Clear Line AC Optimiser Priced per single unit NCF Clear Line is an audio grade AC optimizer, small enough to hold in your hand, that instantly enhances the quality of your power supply. Simply plug the NCF Clear Line into any vacant receptacle on either a power distributor or wall outlet. For best effect, use the NCF Clear Line on the same AC line/supply as your system, preferably at a receptacle adjacent to your system. It only takes a moment to hear the improvement in the sound. You won't have to switch back and forth repeatedly in order to “discover” an improvement. It's right there. You'll immediately notice improvements in the depth and focus of the sound stage, harmonics and tonal balance with NCF. Low frequencies are cleaner, with a greater sense of definition.
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