Furutech FI-33 20A IEC AC Inlet


SKU: FUFI33IEC Categories: ,

The Furutech FI-33 20A IEC AC Inlet is available in Gold or Rhodium plated version, and also the new NCF version 20 amp High End Performance IEC inlets.

Made with pure copper conductors and plated with either Rhodium or Gold and rated at 20A 125V A.C. and 16A 250V.  Price is for Gold plated version.  Please us the drop down menu to select the gold or rhodium plated version or the FI-33R NCF version you want.

Furutech FI-33(R)/(G)

High End Performance 20A IEC Inlet
Rating:20A 125V A.C. and 16A 250V

FI-33 High End Performance 20 amp IEC Inlets

FI-33 NCF(R) Rhodium-Plated  $143.00 (NCF VERSION)
FI-33(R) Rhodium-Plated  $133.00 (NON NCF)
FI-33(G) 24k Gold-Plated  $113.00 (NON NCF)

•Pure copper a (Alpha) Conductor
•Materials: Nylon/fiberglass
•Rating:20A 125V A.C. and 16A 250V

Furutech FI-33 20A IEC AC Inlet Specifications:

・Specified for wire diameters of 4mm (set screw)
・Dimensions: 60.4mm (W) x 30.4mm (D) x 38.7mm (H)
・Rated: 20A/125V and 16A/250V

FI-33 NCF (R) High End Performance IEC INLET

Nano Crystal² Formula – Nano Crystalline, Ceramic and Carbon Powder
Incorporated into new NCF series of Furutech products, Nano Crystal² Formula — NCF is comprised of 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. Furutech then combines this remarkable crystalline material with nano-sized ceramic particles and carbon powder for their additional “Piezo Effect” damping properties. The resulting Nano Crystal² Formula is the ultimate electrical and mechanical damping material – only found in Furutech products!


• α (Alpha) Pure-Copper Rhodium-plated Conductor
• Materials: Nylon/fiberglass with special “NCF” anti-resonance damping material – nano-sized crystalline, piezo ceramic particles and carbon powder
• Specifications: Accommodates wire diameters up to 4.0mm (set-screw)
• Dimensions: 60.5 (W) x 30.4mm (D) x 38.7mm (H) ±0.1mm
• Type: 2-pole+earth, Rated: 16A/250V // 20A/125V

See all the IEC AC Inlet connectors we offer here.

ALL metallic parts used in Furutech products go through the Alpha Process treatment to keep all connectors, conductors, and metal parts in a perfect stress-free, stable and highly conductive state.

The treatment begins during the manufacturing process with a deep, conditioning cryogenic freeze of all metal parts. Using high-end refrigerants — liquid N2 or He
– Furutech achieves temperatures of between -196 to -250C. The treated parts actually change their molecular structure at these extremes of temperature relieving internal stress. The molecules bond together more tightly and the overall structure becomes more stable. This improves electrical conductivity and so power and signal transfer.

Step two in the Alpha Process exposes these same parts to the patented Ring Demagnetization treatment. Ordinary high power magnets used for this purpose often increase magnetization effects; they leave some areas more magnetized than others. Just like a CD spinning over a fixed magnet; when the CD stops the area above the magnet is still exposed to the magnetic field causing audible effects. This patented process uses controlled attenuation to completely eliminate magnetization for immediately more vivid and colorful improvements. Ring Demagnetization further enhances conductivity of all treated materials. The patent holder for this treatment is Sekiguchi Machine Sale Co., Ltd. in Japan; Furutech are licensed users of the technology.

The Final Result The 2-Step Alpha Cryogenic and Demagnetizing Process works in tandem with other design-in features to create the most optimized power and signal transfer possible.  Furutech’s total awareness and devotion to detail results in a greater sense of power, dynamics, and resolution, with cleaner, blacker backgrounds and a larger, more stable soundstage, vivid tonal colors and deeper extension at both ends of the frequency range.

Additional information

Weight .3 lbs
Dimensions 3 × 3 × 3 in
IEC AC Inlet Gold or Rhodium Plate

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