Posted on 28th June, 2019


Following the success of Furutech’s NCF Booster and Booster-Signal cable and connector holders, the company has introduced the third edition to the range: the new NCF Booster-Signal-L.

Since launching in 2017, Furutech’s NCF Booster series of cable and connector holders have been well received by press and customers alike due to the apparently consistent difference they can make to audio system performance. Furutech describes the series as “not a sound enhancer, but a sound revealer”.  

After decades of investigating what the company calls ‘pure transmission’ – how to transmit a delicate audio signal from A to B in its most unadulterated form, neither adding anything nor taking anything away.

Now, enter the NCF Booster series, which addresses the interaction between cables and connectors and their immediate environment.

Furutech Signal Booster L

The NCF Boosters, Furutech tells us, not only lift audio cables off the floor and enable optimum alignment between connectors and sockets, but they also provide damping for both cables and connectors. That damping is specifically designed to reduce environmental interference, thus enabling a more pure and clear signal.

With the NCF Booster-Signal-L’s arrival, there are now three products in the series: the NCF Booster for power cables and connectors, NCF Booster-Signal for speaker and interconnect cables and connectors, and the new NCF Booster-Signal-L. The latter’s unique design allows for the cradle to be lowered much further, making it possible for the NCF Booster-Signal-L to support connections that are usually positioned lower on components like HDMI and USB.

The key ingredient in all three products is Furutech’s proprietary Nano Crystal Formula (NCF). As the name suggests, NCF features a special crystalline material with two active properties. According to the details; firstly, it generates negative ions that eliminate static. Secondly, it converts thermal energy into far infrared. Furutech combines this crystalline material with nano-sized ceramic particles and carbon powder for their additional piezoelectric damping capabilities. The resulting ‘Formula’ is said to deliver superb electrical and mechanical damping.

Furutech Signal Booster L

We can sense what some of you are thinking, and so can Furutech as it is keen to underline:

These are not ‘magic’ crystals. There is nothing mysterious about the way they work - quite simply, they improve audio performance in a very specific and measurable way.

Naturally, the company states that much will depend on your particular system, its components, your specific cables and connectors, and your flooring materials regarding radiated resonance and floating static fields on synthetic materials.

We are advised that the best results can be achieved through practical experimentation. Consider the NCF Booster, Booster-Signal and Booster-Signal-L as a trio of tuning devices. We are promised that multiple units of each placed at various points along cables will deliver noticeable results. Additionally, the more units placed, the more changes will be heard in playback. So, trial and error should get you hitting the real ‘sweet spot’ through discovering the various units’ optimum placement.

Furutech hints that electrical and mechanical resonance can be focused at specific points (connectors, points where cables contact flooring or racks, points where cables are under stress – tight bends, sagging wires, etc.). Placement of NCF Booster units at such vital points will tend to deliver optimal results.

As a sign-off, Furutech tells us that:

If you’re expecting the difference the trio will make to a system’s sound to be subtle, prepare to be surprised.

We may well have to take a closer look at these.

Price and availability

The new Furutech NCF Booster-Signal-L is available now, priced at £140 (inc. VAT).

Other available products in the range are priced as follows:

  • NCF Booster - £290
  • NCF Booster-Signal - £175
  • Optional top clamp for NCF Booster-Signal - £122
  • Additional extension shafts (per 10) - £30
  • Additional NCF Booster lower cradle - £110
  • Additional NCF Booster-Signal lower cradle - £106


Jay Garrett's avatar

Jay Garrett

StereoNET UK’s Editor and Bass playing gadget junkie. He’s captained the good ship GadgetyNews for over a decade, making low jargon high tech a very handy thing. His passion for gadgets and Hi-Fi is second only to being a touring musician.

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Posted in: Hi-Fi
Tags: sound fowndations  furutech