Furutech FI-50 (R) Ultimate C15 IEC Connector (each)

Furutech FI-50 (R) Delivers Ultra High-End IEC Connector Performance

Furutech FI-50 (R) IEC Connector is a premium-grade solution crafted for uncompromising audio systems, where precision current delivery and resonance control are critical. A key model within the Furutech Piezo Ceramic Series, the FI-50 (R) leverages advanced materials science and innovative mechanical design to support the company’s Pure Transmission mission—preserving power purity at every stage of the signal chain.

FI-50 (R) Combines Carbon Fibre and Stainless Steel for Resonance-Free Power Transfer

FI-50 (R) features a sophisticated multilayer housing formed from non-magnetic stainless steel and carbon fibre, engineered to suppress mechanical vibration and electromagnetic interference. These two premium materials are bonded with an acetal copolymer, a high-performance damping and insulating compound that helps maintain a low-resonance operating environment.

Developed with input from leading Japanese audiophiles, this housing doesn’t just protect the connector—it improves it. By eliminating resonance pathways through the body, the FI-50 (R) offers a cleaner, more focused power interface that preserves tonal integrity and frequency balance across the audio spectrum.

FI-50 (R) Uses Piezo Ceramic and Carbon Damping for Electrical Silence

Furutech’s FI-50 (R) incorporates an internal body structure that blends nylon and fibreglass with nano-sized ceramic particles and carbon powder. This carefully engineered combination forms a mechanically and electrically non-resonant architecture, reducing interference and improving overall signal clarity.

At the heart of this damping system is the piezoelectric effect—an interaction where mechanical energy is converted into an electrical charge via embedded polycrystalline ceramic particles. These charged elements interact with the thermally conductive carbon, which disperses the energy as heat across the connector surface. The result is an active damping mechanism that reduces distortion from vibrational and electrical sources simultaneously, giving your audio system greater dynamic headroom and tonal purity.

FI-50 (R) Features High-Purity Conductive Materials and Advanced Grounding Design

FI-50 (R) benefits from Furutech’s proprietary α (Alpha) conductor technology, which includes a highly treated pure copper core layered with rhodium plating. The surface plating resists oxidation while enhancing high-frequency transmission and transient response. This construction is designed to deliver stable, low-resistance current, which is essential for reference-grade power delivery.

The connector also integrates Furutech’s patented Ground Jumper System, ensuring consistent grounding while significantly lowering potential interference caused by ground loops. This system adds an additional layer of noise suppression and reinforces the connector’s role as a true high-fidelity component.

FI-50 (R) Offers Stable Mechanical Locking and Broad Cable Compatibility

Furutech’s FI-50 (R) IEC connector is compatible with a wide range of high-performance power cables, offering a secure and vibration-resistant connection through its reinforced cable clamp mechanism. This clamp minimises physical movement that can generate microphonic noise or introduce mechanical distortion into the signal path.

By maintaining a stable, firm fit, the FI-50 (R) ensures both electrical consistency and long-term mechanical reliability, even in systems where large-diameter cables or heavier cords are used.

FI-50 (R) Elevates Tonal Clarity and Enhances System Resolution

FI-50 (R) Piezo Ceramic IEC connector is designed not only to deliver power but to preserve and enhance the integrity of your system’s sonic output. Its innovative materials and energy-conversion technology help eliminate the low-level distortions that typically veil detail, compress dynamics, or skew tonal balance.

When integrated into power chains for DACs, preamps, amplifiers or digital sources, the FI-50 (R) reveals a more expansive soundstage, tighter low-end definition, and natural high-frequency extension. It contributes directly to an emotionally engaging, fatigue-free listening experience, making it an essential component for reference-grade setups.