A global reference, What Hifi? is one of the most comprehensive magazines covering Home Cinema and Hifi. The "5 stars" award distinguishes the highest quality products, according to this British magazine.
The Supra EFF-ISL is a high-quality interconnect cable designed for superior audio performance. It is a 75 Ω RCA analog cable made of silver-plated oxygen-free copper (OFC) with a cross-section of 0.5 mm squared, in a polyethylene (PE) central core.
The strands are silver-plated to deliver ultra-high frequencies and are insulated using PE, providing the lowest capacitance. The cable is engineered to perfectly transfer even the most subtle musical details, making it an excellent choice for audiophiles.
It particularly stands out for its calm, detailed, and heavy sound, which contrasts with the brighter and livelier sound of some other cables. The EFF-ISL is praised for its great dynamics, strong stable imaging, and overall performance, with clear and concise voices.
The EFF-ISL is equipped with Supra’s fully shielded one-end connectors, Supra PPSL, featuring a chuck-locking cable clamp on the female chassis RCA, ensuring a transparent connection and long life even in applications with frequent reconnections.
Laurent
suited to my needs, screwing the terminals is not all that practical
Comment from May 01, 2026 — Experience from April 20, 2026
Jean Michel
Very good cable 👍
Jean Michel
Comment from April 17, 2026 — Experience from March 07, 2026
Patrice
Excellent quality cables
Comment from April 01, 2026 — Experience from March 20, 2026
