Furutech Flow-28-NCF Inline Power Filter (each)

Furutech Flow-28 NCF Eliminates Radiated AC Noise at the Source

Furutech Flow-28 NCF Inline Power Filter is a precision-engineered, high-performance inline solution designed to eliminate radiated AC noise before it contaminates your signal path. This advanced EMI filter functions as a dynamic barrier between your audio or AV equipment and the harsh electrical noise carried by typical household power lines. The Flow-28 NCF maintains tonal accuracy, preserves dynamic expression, and protects your system’s sonic integrity — all without stripping away critical high-frequency detail.

Ideal for connection between high-end power cables and power distributors, or between power cords and components, the Flow-28 NCF integrates seamlessly into audiophile-grade systems, enhancing clarity and definition without compromise.

Furutech Flow-28 NCF Uses Composite Dampening to Preserve Sonic Detail

Flow-28 NCF is constructed around a shell infused with a fusion of nano-sized ceramic particles and powdered carbon, embedded in a nylon and fibreglass housing. This hybrid structure offers mechanical and electrical dampening, effectively neutralising both structural vibrations and electromagnetic interference (EMI).

The inline filter incorporates Furutech’s Floating Field Damper, a patented earth/ground jumper system (US Patent No. 6,669,491) that stabilises grounding potential while minimising unwanted noise coupling through the earth line — a key source of subtle yet disruptive distortion in sensitive systems.

This multi-material approach ensures that vibrational and electromagnetic noise sources are intercepted and absorbed, rather than passed through to your audio chain.

Furutech Flow-28 NCF Maintains High-Frequency Transparency Without Compression

Flow-28 NCF inline power filter achieves substantial noise attenuation — up to 30dB at 10MHz — through a precisely tuned parallel circuit combining an inline coil and capacitor. This configuration efficiently suppresses EMI and RFI across a wide frequency band without introducing phase distortion or altering the tonal balance of your system.

Unlike conventional power filters that may blunt treble extension or reduce micro-dynamic detail, the Flow-28 NCF retains the airiness, depth, and dimensionality that give high-resolution recordings their realism. It leaves the transient response untouched, preserving the lifelike dynamic range required for both audiophile music playback and immersive cinema experiences.

Furutech Flow-28 NCF Features Rhodium-Plated Connectors for Maximum Conductivity

Fitted with Furutech's FI-28R rhodium-plated Alpha (α) non-magnetic connectors, the Flow-28 NCF ensures superior signal integrity and contact stability. These premium-grade terminations enhance current transfer while shielding against external electrical interference. Inside the unit, AC-1501R EMI-filtering IEC inlets feature rhodium-plated α (Alpha) copper alloy conductors, delivering robust, oxidation-resistant connections for long-term performance.

The unit also includes a patent-pending metal cable clamp that provides firm, stable grip while reducing vibration-borne distortion—another often-overlooked contributor to signal degradation in high-fidelity systems.

Furutech Flow-28 NCF Employs α (Alpha) OCC Conductors and PE Insulation for Lower Capacitance

The internal cabling in the Flow-28 NCF inline power filter comprises α (Alpha) OCC conductors — oxygen-free copper strands treated with Furutech’s proprietary cryogenic and demagnetisation processes. This dual-layer conductor structure includes a 56-strand inner core and 29-strand outer layer, optimised for efficient current delivery and minimal resistance.

Surrounding the conductors are layers of irradiated PE insulation and Teflon tape, selected for their low dielectric constant and excellent capacitance control. The entire assembly is shielded with α (Alpha) braided conductor wire and wrapped in a vibration-damping nylon yarn braid, offering both physical resilience and resistance to radiated noise.

This meticulous cable construction helps reduce energy loss and maintains a clean signal path, especially critical in low-noise, high-resolution setups.

Furutech Flow-28 NCF Delivers High-Fidelity Power Filtration Across a Wide Frequency Band

With attenuation values of 8dB at 100kHz, 14dB at 500kHz, and 30dB at 10MHz, the Flow-28 NCF delivers targeted filtering where it's most needed: in the high-frequency spectrum where digital noise and power line interference are most intrusive. Whether placed between your power cable and preamplifier, or between your line conditioner and DAC, this inline power filter works transparently to restore resolution, spatial precision, and musical nuance.

The integration of GC-303 EMI absorption material, developed by Furutech, further enhances the unit’s capability to trap and neutralise airborne and conducted EMI before it can interact with your gear’s sensitive circuits.

Furutech Flow-28 NCF Integrates Seamlessly with High-End Audio Components

Designed for universal compatibility across global AC standards, Flow-28 NCF supports AC 115V to 250V, with a 15A current rating at both 50Hz and 60Hz. Its compact inline format makes it suitable for discreet integration in setups where rack space or modularity is a concern. Ideal for high-end audio components, reference-grade headphone systems, or studio monitors, the Flow-28 NCF offers an unobtrusive yet potent upgrade path for any discerning listener seeking to eliminate power-related performance bottlenecks.

From its scientifically developed materials to its audiophile-grade construction, the Furutech Flow-28 NCF Inline Power Filter is a class-leading tool in the pursuit of sonic purity, system clarity, and immersive listening experiences.