Supra EFF-IXLR – Award-winning Balanced High-End Cable

The Supra EFF-IXLR is an exceptional analog interconnect designed for discerning audiophiles and professional use. Built on the unique EFF (Equalized Frequency Flow) technology, it delivers a completely uncolored signal transmission where every detail and nuance of the music is preserved. Featuring silver-plated conductors and robust XLR connectors, this is the cable for those who want to eliminate "bottlenecks" in their audio system.

EFF Technology

Tube-shaped conductors counteract the "skin effect" and balance impedance across all frequencies.

Silver-Plated Copper

Optimized conductivity for high frequencies provides unsurpassed detail and clarity.

Balanced XLR

Fully balanced construction with Supra's patented, fully shielded XLR connectors for maximum noise immunity.

Robust Shielding

Double aluminized PET foil protects the signal against RFI interference, even in "noisy" environments.

Equalized Frequency Flow (EFF)

One of the biggest challenges in signal transmission is the "skin effect," where high frequencies tend to travel on the surface of the conductor while low frequencies travel deeper. This can create phase errors and uneven frequency response. Supra EFF solves this by building the conductor as a tube around a plastic core. This forces all frequencies to travel within the same cross-sectional area, eliminating the skin effect and providing completely transparent sound.

World-Class Material Selection

The conductors in the EFF-I consist of silver-plated oxygen-free copper (OFC). Silver is one of the world's best conductors, especially for high frequencies, contributing to the cable's fantastic treble reproduction and transient response. The PE insulation ensures ultra-low capacitance, allowing the signal to travel quickly without being "held back."

  • Mechanically Stable: Supra's XLR connectors are designed for heavy-duty use. They feature a secure locking mechanism and robust strain relief that ensures the cable lasts for years.
  • Professional Standard: Ideal for connecting preamps to power amps, CD players to amplifiers, or in professional studio environments where balanced transmission is required.
  • Swedish Quality: Designed, manufactured, and quality-assured in Ljungskile, Sweden.

Why Balanced Transmission?

By utilizing the XLR standard, the signal is sent in both phase and anti-phase. Any interference picked up along the way is effectively cancelled out when the signal reaches the receiver. This makes the Supra EFF-IXLR the perfect choice for long cable runs or environments with high electronic noise.

Specifications

ModelSupra EFF-IXLR Audio
TypeAnalog Balanced Interconnect (XLR)
Lengths0.5m, 0.75m, 1m, 1.5m, 2m, 3m (Pair)
TechnologyEFF (Equalized Frequency Flow)
Conductor MaterialSilver-Plated Oxygen-Free Copper (OFC)
Area0.46 mm² / AWG 21
Number of Strands12 pcs (Tube-shaped construction)
ShieldingDouble Alu/PET foil
InsulationPE (Polyethylene)
ConnectorsSupra Swift XLR (24K Gold-Plated)
WiringBalanced (Pin 1=Shield, 2=Hot, 3=Cold)
ColorIce Blue
Country of OriginSweden

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We are fully aware that a speaker reflects the character of the environment that it is in. As such, we offer a refund within 30 days if you are not satisfied with your purchase (see terms below).

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