Supra EFF-ISL 2m

The Supra EFF-ISL 2m is an analog RCA audio cable designed to deliver high-quality sound signal transmission. Developed by the Swedish brand Supra, it stands out for its meticulous design and high-level audio performance.

Cutting-Edge Technology for Superior Audio

The EFF-ISL cable incorporates Supra’s patented EFF (Equalized Frequency Flow) technology. This innovation aims to minimize the skin effect, an electrical phenomenon that can degrade audio signal quality, especially at high frequencies. The cable’s unique structure features tubular silver-plated copper conductors arranged around a plastic core. This configuration ensures that all signals, regardless of frequency, pass through the same section, providing a uniform frequency response across the entire audible range.

Meticulous Construction for Optimal Performance

Each conductor in the EFF-ISL is made up of 12 strands of silver-plated OFC (Oxygen Free Copper), each with a diameter of 0.22 mm. The polyethylene (PE) insulation ensures very low capacitance, helping to preserve signal integrity. Each conductor is individually shielded with aluminum, offering effective protection against electromagnetic interference and RF noise, ensuring a silent background.

Transparent and Faithful Sound

The Supra EFF-ISL’s sound signature is characterized by its transparency and neutrality. Audiophiles will particularly appreciate its ability to reproduce even the finest musical details without coloration. The midrange is clear and open, allowing for faithful reproduction of vocals and instruments. The highs are extended and refined, providing excellent airiness to the soundstage. While the bass may seem slightly less prominent compared to some competing cables, it stands out for its precision and articulation.

High-Quality Connectors for Optimal Connection

The EFF-ISL is equipped with Supra’s premium PPSL RCA connectors, renowned for their build quality. These connectors feature a pressure-locking system that ensures optimal and durable contact with device sockets. The pins are 24-carat gold-plated for maximum conductivity and resistance to oxidation. The aluminum body of the connectors also contributes to the cable’s overall shielding.

Versatile Usage for Various Systems

While particularly suited for high-end systems, the Supra EFF-ISL can enhance the performance of audio setups at any level. It is ideal for connecting a source (CD player, DAC, turntable with phono preamp) to a preamplifier or integrated amplifier. Its ability to preserve signal integrity also makes it an excellent choice for connections between a preamplifier and a power amplifier.

Functional and Aesthetic Design

The cable features a glacier blue PVC outer jacket that is resistant to heat and aging. With a diameter of 7.8 mm, it remains flexible enough for easy installation in tight spaces. The metric markings on the jacket allow for easy identification of the length used.

European Craftsmanship for Quality Assurance

True to its tradition, Supra manufactures the EFF-ISL in Sweden. This local production ensures rigorous quality control at every stage of manufacturing, from material selection to final assembly. This attention to detail is reflected in the cable’s durability and consistent performance.

Technical Specifications

Construction

• Double-shielded cable
• Pure copper conductors with silver plating
• Symmetrical design

Technology

• Balanced frequency flow technology

Dimensions

• Length: 2 × 2 m