Supra LORAD 2.5 CS-16-EU 2m

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Overview

The LoRad 2.5 CS-16-EU, developed by Jenving Technology in Sweden, is a 16 A mains power cable designed to reduce electromagnetic interference. It uses a patented active interference suppression technology employed by institutions such as the Swedish National Laboratory of Forensic Science (SKL), the Swedish Air Force for the JAS project, European air traffic control towers, and several Scandinavian hospitals.

Gray plastic female electrical connector, three N and L slots, marked 16A 250V~, close-up in oblique view

LoRad Technology: When physics meets acoustic engineering

The LoRad 2.5 CS-16-EU deploys a particularly sophisticated electromagnetic protection architecture. At the cable’s core, three 2.5 mm² tinned OFC (Oxygen-Free Copper) conductors form the main conductive backbone. This generous gauge allows a continuous 16-amp flow—a capacity rarely reached in home audio—ensuring instant power reserves for the most demanding amplifiers.

The hallmark of the LoRad design lies in its short-lay construction. The conductors are twisted at a precise, tight pitch, creating a geometry that naturally cancels the alternating magnetic fields generated by the current flow. Borrowed from professional transmission cables, this technique turns each twist into a micro-loop for magnetic cancellation.

The carbon/nylon semi-conductive shield is the major innovation of this MkII version. Unlike traditional metallic shields that can create parasitic capacitive effects, this composite braid acts as an absorber of electromagnetic waves. Carbon, naturally semi-conductive, dissipates radio-frequency interference without causing internal reflections, while nylon provides flexibility and mechanical strength. This unique material successfully passed the standardized bending test of 2 × 30,000 flex cycles required for European HD21.5 S3 certification.

EU two-pin plastic plug in gray with gold pins, white cable with blue label, three-quarter view

Technical evolution over the first generation

The MkII version of the LoRad marks a notable progression over the original model. The former metallic shield with a drain wire has given way to the carbon/nylon concept, eliminating a potential weak point: the drain wire which, under repeated flexing, could damage internal insulators. This new architecture gives the cable increased flexibility despite its 11 mm diameter, making it easier to integrate into constrained installation setups.

Mechanical fatigue resistance has been significantly improved. Laboratory tests show a 40% longer lifespan under torsion and bending cycles compared to the previous generation. This robustness partly explains why critical environments like operating rooms or recording studios have widely adopted this technology.

Professional and home applications

The impact of the LoRad 2.5 CS-16-EU on an audio-video system manifests in several measurable improvements. Noise floor reduction can reach several decibels, revealing micro-details previously masked by ambient electromagnetic haze. Transients gain precision, delivering crisper percussion attacks and better-defined instrumental outlines.

In video, interference suppression results in a more stable image, free from flicker artifacts that are often subconsciously imperceptible but visually fatiguing. Blacks appear deeper and contrasts more defined, particularly on high-resolution projectors sensitive to power fluctuations.

Professional and medical environments

The use of LoRad in medical environments is no accident. Medical imaging equipment, particularly sensitive to electromagnetic disturbances, benefits from this technology to maintain measurement accuracy. In research laboratories, where measuring instruments detect signals in the microvolt range, the absence of stray radiation becomes crucial to experimental validity.

Electrosensitive individuals (EHS) find in LoRad a practical solution to reduce exposure to domestic electromagnetic fields. Measurements taken in an anechoic chamber show an 85% reduction in electromagnetic emissions in the 50 Hz–10 MHz band compared to a standard mains cable.

Premium connectors and finishes

The SW-EU Schuko and SWF-16 (C19 IEC-320) connectors feature 24-karat gold plating with optimized thickness to ensure maximum conductivity and corrosion resistance. This surface treatment, applied by electrolytic bath under controlled atmosphere, guarantees a contact resistance below 0.5 milliohm even after 10,000 insertion cycles.

The straight Schuko plug incorporates progressive-pressure contact blades, maintaining a constant clamping force of 15 Newtons throughout the product’s lifespan. The C19 connector, intended for high-power equipment, has oversized contacts capable of handling current peaks up to 20 amps for 10 seconds.

Technical Specifications

Electrical Specifications

Rated voltage: 250 V
Maximum current: 16 A continuous
Maximum power: 4000 W
LoRad technology: active suppression of electric and magnetic fields

Construction and Materials

Conductors: 3 × 2.5 mm² (AWG 13), tinned OFC copper
Construction: short-pitch twist to reduce interference
Advanced shielding: carbon/nylon semiconductive tape against RF interference
Flexibility: medium

Connectors

Input connector: straight Schuko 16 A, gold-plated (SW-EU)
Output connector: C19 IEC-320 (SWF-16)
Contacts: gold-plated for optimal conductivity

Standards and Certifications

Certification: Intertek Sweden
Compliance: HD21.5 S3
Safety: must be used with a properly grounded wall outlet
Manufacturing: Swedish, professional standards

Recommended Applications

High-end Hi-Fi systems and home cinema
Recording studios and professional stages
Medical installations and research laboratories
Electromagnetic hypersensitivity (EHS) environments
Equipment used by laboratories, the military, hospitals, and control towers

Box Contents

1 Supra LoRad 2.5 CS-16-EU cable (length as selected)

Key Product Highlights

Significant reduction of electromagnetic interference
Stable, safe power delivery for demanding devices
Enhanced audio and video quality: increased dynamics, reduced noise, optimal stability
Swedish-made durability and precision
Trusted and used by professionals worldwide
Proven technology in critical environments

Frequently Asked Questions

Does the LoRad 2.5 CS-16-EU cable require a burn-in period?

While the cable is fully functional from first use, dielectric materials gradually stabilize during the first 50 hours of operation. This period allows the insulating polymers to reach their optimal electrical equilibrium. Some users report a slight improvement in sonic transparency after this phase, particularly in the treble range where parasitic micro-capacitances are most audible.

Can this 16A cable be used with devices that draw less current?

Absolutely. The 16A rating is the cable’s maximum capacity, not a minimum requirement. A CD player consuming 50 watts will benefit just as much as a 1000-watt amplifier from LoRad’s low impedance and electromagnetic shielding. The generous conductor cross-section ensures negligible voltage drop even during transient current demands.

How should I orient the cable relative to mains phase?

Supra recommends connecting all devices in a system with consistent phase. A phase tester (such as the Supra Phase Detector) helps identify the optimal position of the Schuko plug. This phase coherence reduces circulating ground currents and minimizes hum potential. In a properly phased installation, background noise reduction can gain up to an additional 6 dB.

What’s the difference between 1.5 m and 2 m versions in the same setup?

The optimal length depends on your configuration. A cable that’s too short will create harmful mechanical stress, while excess length slightly increases series resistance and interference pickup area. For power below 500 W, the electrical difference between 1.5 m and 2 m remains negligible (less than 0.01 ohm). Choose the length that offers the most direct run without mechanical tension.

Does the shielding work without a ground connection?

No. The carbon/nylon shielding requires a protective earth connection to drain captured electrostatic charges. Without earth, the shield becomes floating and can even act as an antenna, worsening interference. In ungrounded installations (not recommended), a standard unshielded cable will paradoxically be less problematic than a poorly grounded LoRad.

Is this cable suitable for digital equipment (servers, NAS, switches)?

An excellent application. The switching power supplies of IT equipment generate high-frequency harmonics that are particularly polluting. LoRad’s carbon/nylon shielding excels at absorbing these disturbances (30 kHz–1 MHz). In addition, the cable’s low resistance maintains stable voltage despite the abrupt load variations typical of modern processors.

Why the glacier blue color instead of traditional black?

Beyond brand identity, Supra’s glacier blue PVC integrates specific anti-UV additives that prevent premature jacket hardening. Accelerated aging tests show 60% better retention of flexibility after the equivalent of 20 years of use compared to standard black PVC. This exclusive formulation contributes to the product’s exceptional longevity.

Are custom lengths assembled at the factory or by resellers?

All LoRad 2.5 CS-16-EU versions, including custom lengths, are assembled at Jenving’s Ljungskile factory. Technicians, certified to military soldering standards MIL-STD-2000, use temperature-controlled soldering stations and halogen-free flux. This centralized process guarantees consistent quality regardless of the final point of sale.