Furutech’s Clear Line range was first launched in 2020 with the NCF Clear Line AC optimizer, a compact device designed to instantly enhance the quality of your system’s power supply. Now, the new NCF Clear Line-RCA and -XLR extend the range, honing in on the quality of your system’s signal line.

The new NCF Clear Line-RCA and -XLR are signal line optimizers. Like the existing NCF Clear Line AC optimizer, they are small enough to hold in your hand and could not be more simple to use.
Simply insert the NCF Clear Line-RCA into any spare RCA output or input terminal of your equipment – whether an amplifier, DAC, CD/DVD/SACD player, etc. Similarly, the –XLR version comes in F (female) and M (male) versions ready to plug into either output or input XLR terminals respectively.


You can opt to use a single unit, but you may also choose to plug in two – for example one per channel in the case of truly dual mono equipment – for even greater improvements.
“You’ll notice the effects immediately,” says Furutech. “With a significant improvementIn the signal-to-noise ratio, you’ll experience an increase in detail and clarity, with enhanced reproductionof subtle nuances. The soundstage gains depth and is more vivid with greater contrast. Bass notes are tighter while the midrange and treble are sweeter and cleaner.”

As the NCF Clear Line’s name suggests, the not-so-secret ingredient is Furutech’s unique NCF, or Nano Crystal2 Formula, an in-house invention that has resulted in a raft of innovative products from the Japanese brand in recent years. NCF features a special crystalline material that has two distinct properties: it generates negative ions that eliminate static, and it converts thermal energy into far infrared. When this material is combined with nano-sized ceramic particles and carbon powder, its crystals become the ultimate electrical and mechanical damping material. Created by Furutech, NCF is found exclusively in Furutech products.

In the NCF Clear Line range, Furutech has introduced perhaps the most accessible way to bring the benefits of NCF technology into your home. Since it couldn’t be simpler to take the performance of your audio or video system to the next level with Furutech’s NCF Clear Line range, why not hear the difference for yourself right now.
Features & specifications: NCF Clear Line (XLR and RCA)
- Rhodium-plated, pure copper, one-piece construction conductors injected with heat-resistant NCF liquid crystal polymer resin.
- Audio grade ceramic capacitors (two) specially treated to suppress resonance and eliminate noise induced at the equipment’s input or output terminals.
- Outer body formed with NCF liquid crystal polymer resin, incorporating nylon, fibreglass, nano-sized crystalline piezo ceramic particles and carbon powder within a multi-layered NCF, non-magnetic stainless steel and carbon fibre shell.
- End cover formed from a special heat resistant nylon, again combined with NCF and incorporating moulded channels to increase the surface area of the NCF for further resonance damping.
- Pressure-sealed internal air chamber for additional damping effects.
- All metal parts are treated with Furutech’s two-stage ‘Alpha’ cryogenic and demagnetization process, designed to render the metal stress-free, stable and highly electrically conductive, improving every facet of audio and video performance.
- Suggested burn-in time 24 hrs.
Pricing & availability
Furutech’s NCF Clear Line RCA and XLR line optimizers are available now priced as follows (including VAT).
NCF Clear Line RCA £205 per unitNCF Clear Line XLR (M or F)£260 per unit
Furutech’s NCF Clear Line AC power supply optimizer is also available, priced at £290 per unit (including VAT).