The Lorad 2.5 IEC Fr is a power cable designed by Supra Cables after more than five years of development. Manufactured in Sweden, it aims to limit electromagnetic interference thanks to a patented helical construction and shielding that combines carbon and semi-conductive nylon. This design helps reduce both electric and magnetic emissions. The cable is used in technical environments such as hospitals, air traffic control towers, and recording studios.
The Lorad 2.5 features a complex architecture that goes far beyond that of conventional power cables. Its three 2.5 mm² tinned OFC (Oxygen Free Copper) conductors are arranged with a short, precise twist pitch. This specific geometry creates mutual cancellation of alternating magnetic fields, a physical phenomenon that drastically reduces the cable’s electromagnetic radiation.
The innovative carbon/nylon shielding is the technical hallmark of this MK2 generation. Unlike traditional metallic shields, this semi-conductive material offers superior protection against radio frequency interference while maintaining remarkable flexibility. An ultra-flexible 66-strand drain wire connects the shield along its entire length, efficiently channeling captured interference to ground without risking damage to the main conductors’ insulation.
The high-durability glacier blue PVC outer jacket protects the assembly while making the cable easy to identify in an installation. This distinctive color, now emblematic of the Swedish brand, reflects Supra’s Nordic philosophy: a discreet appearance that conceals high-level technical performance.
The acronym LoRad (Low Radiation) stands for much more than just a shielded cable. This patented technology is based on two complementary physical principles. On one hand, the semi-conductive shield forms a barrier against alternating electric fields radiated by the cable itself. On the other, the tightly wound helical twist of the conductors creates a geometry where magnetic fields cancel each other out, reducing their propagation into the environment.
This dual protection works bidirectionally: it prevents the cable from electromagnetically polluting its environment while also protecting it from external interference. Modern sources of interference—Wi-Fi networks, mobile phones, dimmers, switching power supplies—generate a wide spectrum of parasitic frequencies that the Lorad effectively neutralizes.
Tests conducted by Intertek Sweden have validated not only compliance with European safety standards HD21.5 S3, but also the effectiveness of the shielding across a wide frequency range. This rigorous certification sets the Lorad apart from the many uncertified “audiophile” cables on the market.
In a high-fidelity system, the Lorad 2.5 delivers audible improvements from the very first moments of listening. The lowered noise floor reveals micro-details that were previously masked. Transients become more precise, especially in the bass range, where articulation becomes firmer and more defined. The stereo image widens and gains depth, creating a more coherent and natural soundstage.
Recording studios particularly appreciate the Lorad’s ability to preserve the integrity of low-level signals. In these environments, where numerous electrical devices coexist, reducing electromagnetic interference is crucial to maintaining audio signal quality. Analog interconnect cables, which are especially sensitive to interference, directly benefit from being near a low-radiation power cable.
Beyond audio, medical and scientific applications also take advantage of the Lorad’s properties. Laboratories equipped with sensitive measuring instruments observe improved accuracy and stability in their readings. People suffering from electromagnetic hypersensitivity (EHS) find in this technology a solution to reduce their exposure to alternating electric and magnetic fields.
The effectiveness of the LoRad shielding is entirely dependent on proper grounding. The cable must be plugged into a wall outlet with a functional ground so the drain wire can channel captured interference away. An installation without grounding would negate the benefits of the shielding and could even create dangerous situations.
24-carat gold-plated connectors ensure optimal conductivity and long-term resistance to corrosion. The straight Schuko connector (SW-EU) and IEC-320 C13 socket (SWF-10) are precisely machined to ensure perfect electrical contact. This level of finish, inherited from Swedish military standards, contributes to the product’s exceptional reliability.
Despite its complex construction, the cable remains flexible, making it easy to integrate into various setups. Unlike some power cables that are as stiff as crowbars, the Lorad retains a suppleness that allows it to be routed behind equipment without excessive constraint.
The anniversary SPC version uses silver-plated copper conductors instead of the standard tinned ones. Silver offers slightly higher conductivity, which is especially appreciated with highly sensitive equipment. The anthracite jacket replaces the traditional glacier blue, giving this special edition a more discreet appearance.
Absolutely. The nominal current of 10 amps allows you to power several devices via a distribution bar. Supra even offers power strips specifically designed to work in synergy with LoRad cables, maximizing protection against interference.
The 2.5 mm² size is ideal for amplifiers, preamplifiers, and medium- to high-power audio/video sources. Its 10-amp, 250V capacity easily covers the needs of most home equipment. The 1.5 mm² version is sufficient for low-consumption devices such as network players or DACs.
Users generally report a gradual improvement in performance during the first hours of use. The dielectric materials stabilize, and the cable gradually reveals its full potential. This evolution remains subtle compared to the immediate gain from replacing a standard cable.
Supra strongly advises against this use. The special shielding makes the cable undetectable by conventional electrical cable detectors, creating a potential risk during future work. Reserve the Lorad for visible and accessible installations.
No, the Lorad does not offer any protection against surges or lightning. It only reduces electromagnetic interference under normal operating conditions. For surge protection, use dedicated devices such as surge protectors or Supra power strips equipped with spike protection.
Eric
I had doubts about the sonic benefit of this power extension cord.... And yet!!! Excellent product. Immediate sonic improvement compared with a budget cable.
Comment from September 16, 2025 — Experience from September 04, 2025
Thierry
High-quality cable with a beautiful finish.
Comment from January 26, 2023 — Experience from December 30, 2022
Charles
Excellent product with top-notch phase alignment.
Comment from September 12, 2022 — Experience from May 17, 2021
