FI-E50 NCF(R)
Furutech’s Ultimate Power Connector Series
＜TRPTK recording studio tests NCF＞
Recording studio trptk.com tests NCF – Netherlands July 2017
(TRPTK was founded in 2014 by audio engineer Brendon Heinst and music producer Luuk Meijssen, as a movement against the degradation of sound quality and emotional impact of recordings. The only reason why music still exists as an art form, is because there are artists out there who want to keep telling their stories, regardless of what it will take to do so. They just want to be heard! And we want to be there to pass their message through)
TRPTK did recordings with test power cords powering the Sonodore power supply and preamplifier, one test with a cable fitted with Furutech’s FI-50 NCF and FI-E50 NCF connectors, and then one with a regular generic power cord. The recordings of a piece called Luminous by composer Maurizio Bignone played by cellist Maya Fridman – the cello was chosen as it is such an extremely rich and broad-band sound
The signal path was:
– Sonodore RCM-402 60V active powered microphone
– Mogami 2534 Quad Neglex microphone cable
– Sonodore MPA-502 60V power supply and preamplifier (powered with either Empire, NanoFlux NCF, or generic cable, through the NCF test box’s normal or NCF output)
– Furutech FA-aS21 interlinks (12m)
– Merging HAPI at 352.8 kHz with Premium Input Modules
– Digital Audio Workstation with Pyramix 11
Follow the TRPTK blog HERE
All cabling, both power and audio, were by Furutech.
In my personal opinion, there is no other choice for cabling if you’re only happy with the absolute best.
Being very finicky about my sound, there’s only one cable manufacturer I fully trust.
– Brendon Heinst
…I have to say, after this test, I am astounded by the quality of this cable. You clearly hear there’s so much more space in the recording, such an openness I’ve never experienced before.
– Brendon Heinst
The recordings can be heard below:
————————————————–
☆44.1kHz/24bit flac Recording Source File
Generic power cord 44.1kHz/24bit flac
Furutech NCF cord 44.1kHz/24bit flac
————————————————–
☆352kHz/24bit flac Recording Source File
Generic power cord 352kHz/24bit flac
Furutech NCF cord 352kHz/24bit flac
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FI-E50 NCF – Rating: 16A 250V AC
FEATURES
NCF Piezo Ceramic Series Connectors • A Furutech First!
Furutech’s Pure Transmission FI-E50 NCF Piezo Ceramic series connector bodies and housings feature several breakthrough construction techniques.
A multilayer nonmagnetic stainless steel and silver plated carbon fiber shell incorporates a special damping and insulating acetal copolymer. Furutech settled on stainless and silver plated carbon fiber for the outer housing after extensive listening sessions with Japanese industry figures and audiophiles.
The body of the connectors incorporates an “active” damping material: Nano Crystal² Formula – Nano Crystalline, Piezo Ceramic and Carbon Powder
Nano Crystal² Formula — NCF Powder is a special crystalline material that has two “active” properties. First, it generates negative ions that eliminate static and secondly, it converts thermal energy into far-infrared, which makes it the ultimate electrical and mechanical damping material.
Nano Crystal² Formula eliminates static, “interconverts” thermal, mechanical and electrical energy and damps vibrations—all for the finest Furutech Pure Transmission signal imaginable.
Floating Magnetic Field Effects
The Furutech Earth/Ground Jumper System
How far will Furutech’s engineers go in their attempts to reach Pure Transmission reference quality? Their concentrated examination of each and every element of signal transfer has resulted in another breakthrough technology, the Furutech Earth/Ground Jumper System. It eliminates EMI (Electromagnetic Interference) induced in metal parts like connector housing screws.
Current flowing through the power connector creates a magnetic field, just as an insulated conductor creates both electromagnetic and electrostatic fields. Furutech engineers found this magnetic field induces current flow (and a small magnetic field) in the screws holding the connector together! These magnetic fields interfere with the larger magnetic field around the conductor and connector.
Furutech’s total attention to detail and elegant engineering neatly solves the problem. The Earth/Ground Jumper System connects the securing screws to a ground terminal within the plug completely eliminating the field disturbances they cause. The stray fields are grounded by a series of interlocking parts within the connector that attach to the ground conductor. The Jumper System is available in Furutech SCHUKO Power Connectors.
The Earth/Ground Jumper System Carries US Patent No. 6,669,491/European Patent No. EP1445837
SPECIFICATIONS
• α (Alpha) Pure-Copper Rhodium-plated main Conductor
• Earth (Ground) Jumper System (US Patent No.: 6,669,491/ European Patent No. EP1445837)
• Nylon/fiberglass body with a special anti-resonance nano-sized crystalline, piezo ceramic particles and carbon damping material
• Multilayered nonmagnetic stainless steel and silver plated carbon fiber housing incorporating an acetal copolymer. The best of damping and insulation materials improve frequency extension and tonal balance
• Specified for cable diameters from 6mm to 20mm
• Dimensions: Body length 55.4mm x 39.5mm diameter / 93.2mm overall length
• Metal cable clamp improves grip and reduces mechanically and electrically induced distortion
Note* Please note that slight discoloration of the silver-plated carbon fiber may occur over time. This is partly due to the nature of the product being hand-produced rather than mass-manufactured. Such variations are normal and do not affect the quality or performance of the product.
Technical Information Notice
Furutech FI-50 NCF / FI-50 / FI-52 NCF / FI-52 / FI-48 / FI-46 Series Connectors Regarding Housing Continuity Measurements Furutech would like to provide the following technical clarification regarding continuity measurements between various external housing sections of certain Furutech connectors. The primary earth/ground path of Furutech connectors is achieved through the actual ground conductor and grounding pin structure itself. Continuity between external housing sections is not a guaranteed specification parameter and may vary depending on product design, construction methods, and normal manufacturing tolerances. In particular, products incorporating carbon fiber elements, layered housing structures, bonded assemblies, or vibration-control materials may exhibit differences in measurable continuity between various external metal components. These variations do not affect:
- Grounding performance
- Electrical safety
- Product reliability
- Intended audio performance
Many Furutech flagship connectors incorporate the patented Floating Field Damper™ (Earth/Ground Jumper System), protected under US Patent No. 6,669,491 and European Patent EP1445837. This sophisticated system is specifically engineered to reduce distortion and noise caused by floating magnetic fields generated within metallic connector components during current flow. The mechanism works by carefully grounding key internal metallic components through a precision-engineered conductive bridge structure, thereby stabilizing electrical potential and improving overall power and signal transfer performance.
Does My Connector Have the Floating Field Damper™?
Video Reference: https://www.youtube.com/watch?v=2HmvNJhM5UE Open your connector and check for the Furutech Floating Field Damper™ structure. The conductivity relationship between the body, housing fixing screws, and ground pole is explained as follows: Check for the small copper tabs located near the screw holes (highlighted in yellow in the reference image). In version “B”, the Floating Field Damper bridge can be seen through the clear plastic cover. In version “A”, only the small copper tabs are visible within the screw holes. Current flowing through a cable and its connector creates magnetic and electrostatic fields that continuously build and collapse during operation. These fields can induce electrical potential within small metallic parts such as fixing screws and connector hardware. The resulting floating magnetic fields can interfere with the main signal or power transfer path, introducing noise and distortion. The Furutech Floating Field Damper™ system addresses this issue by carefully grounding these floating metallic elements through a precision-engineered conductive bridge structure, significantly reducing distortion and contributing to cleaner and more stable power transfer. Because the external housing itself is not the primary earth path, measurable continuity between certain housing sections may or may not be present depending on model design, assembly methods, and normal production tolerances. If your connector incorporates the Floating Field Damper™ structure, you can rest assured that the product is operating as intended and represents one of the most sophisticated audio-grade connector designs available today.
Reference Overview
| Model Series | Top Housing | Carbon Fiber Ring | End Housing | Cable Clamp Screws |
| FI-50 NCF Series | No guaranteed continuity | No guaranteed continuity | Grounded | Grounded |
| FI-50 Series | No guaranteed continuity | No guaranteed continuity | Grounded | Grounded |
| FI-52 NCF Series | No guaranteed continuity | No guaranteed continuity | Grounded | Grounded |
| FI-52 Series | No guaranteed continuity | No guaranteed continuity | Grounded | Grounded |
| FI-48 Series | Continuity present | — | Grounded | Grounded |
| FI-46 Series | No guaranteed continuity | — | No guaranteed continuity | Grounded |
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Important customer notice:
Only products sold by authorized Furutech dealers are covered by warranty. In order to obtain warranty service, proof of purchase from the authorized Furutech dealer must be provided to either the Furutech dealer or the Furutech distributor in the country of purchase. The team at Furutech and our partners worldwide thank you for your understanding.
