Supra EFF-ISL 1m

Name: EFF-ISL 1m
Brand: Supra
SKU: 7330060053610
Price: 109.0 EUR
Availability: BackOrder
Rating: 4.8 (19 reviews)

Awards

What Hi-Fi? 5 stars

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.

Overview

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.

Technical Specifications

Construction

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

Technology

Balanced frequency flow technology

Dimensions

Length: 2 × 1 m

User reviews

Review highlights

The build quality and finish are unanimously praised, with an impression of sturdiness from the moment it is handled.
The screw-locking connector system is mentioned by most customers as an advantage that ensures a reliable and stable connection.
The cable is seen as offering excellent value for money, with performance considered superior to what its price suggests.
In terms of sound, it is described as neutral to slightly smoothing in the highs, without undesirable coloration.

Based on reviews from customers who purchased this product, summarised by AI

Dominique

With this cable, the bass range is more pronounced, the midrange warmer, and the treble sufficiently detailed without being aggressive. There is a comparison of this cable on ifitest; without mentioning other brands, this cable “calms” systems that are a little too bright while remaining affordably priced.

Comment from 10 September 2026 — Experience from 4 April 2026

Automatically translated — Show original (French)

Avec ce cable le registre grave est plus marqué, le medium chaleureux, aigu suffisamment détaillé sans être agressif. Il y a un comparatif de ce câble sur ifitest, sans citer d'autres marques ce câble "calme" les systèmes un peu trop brillants en ayant un prix contenu.

Laurent

suited to my needs, screwing the terminals is not all that practical

Comment from 1 May 2026 — Experience from 20 April 2026

Automatically translated — Show original (French)

adapté a mes besoins le vissage des borniers pas si pratique que cela

Jean Michel

Very good cable 👍
Jean Michel

Comment from 17 April 2026 — Experience from 7 March 2026

Automatically translated — Show original (French)

Très bons câble 👍
Jean Michel