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QED ReferenceXT40i Speaker Cable - 2.0 metres
QED ReferenceXT40i Speaker Cable - 3.0 metres
QED ReferenceXT40i Speaker Cable - 5.0 metres




- Free shipping on orders over € 100,- (NL)
- Returns possible within 14 days
- Pickup available (Vries, Drenthe)
The QED XT40i speaker cable, featuring X-Tube™ technology, is an advanced upgrade to the renowned XT40 cable. This cable incorporates pure oxygen-free copper conductors and the innovative Air Gap dielectric for exceptional audio performance, including enhanced timing, stereo imaging, and rhythmic accuracy. Ideal for home cinema and AV systems, the XT40i promises superior sound quality at a competitive price.
Key Features
- X-Tube™ Technology: Forms conductors into a tube shape around an insulating rod, ensuring low inductance and a consistent amplifier load.
- Air Gap Dielectric: Enhances conductor separation to reduce dissipation and capacitance, improving timing and rhythm.
- 99.999% Oxygen-Free Copper: Minimizes signal loss for high audio purity.
- Low DC Resistance: 8.0 mΩ/m for accurate and clear sound across the spectrum.
Detailed Description
X-Tube™ Technology
The X-Tube™ technology forms the cable conductors into a tube-like shape around a central insulating rod. This design equalizes current densities, resulting in very low inductance and a consistent load to the amplifier. The outcome is a cable that preserves fine musical details and handles rhythms naturally, outperforming higher-priced rivals.
Air Gap Dielectric
The Air Gap dielectric increases the separation of conductors inside the cable, enhancing the amount of air between them. This reduces dissipation and capacitance, leading to audible improvements in timing and rhythmic accuracy. Despite the increased separation, the XT40i retains a cross-sectional area suitable for long cable runs.
Pure Oxygen-Free Copper
The XT40i uses 99.999% oxygen-free copper, which ensures minimal signal loss and high purity of the audio signal. This material choice contributes to the cable's low DC resistance and enhances its overall audio performance.
Low DC Resistance
The cable's low DC resistance of 8.0 mΩ/m ensures an unrivaled frequency response. This feature allows the XT40i to deliver clear and accurate sound across the entire audio spectrum, making it ideal for high-end audio setups.
Technical Specifications
Outside diameter | 6 x 14 mm |
Conductor area | 4 mm² |
Dielectric properties | Air Gap (ε r = 2.4) |
Conductor chemistry | 99.999% oxygen-free copper |
Loop resistance | 8.0 mΩ/m |
Parallel capacitance | 35 pF/m |
Dissipation factor @ 10kHz | 0.0295 |
Self-inductance | 0.57 μH/m |
Gauge | 12 AWG |
Stranded Diameter | 2.75 mm (min) |
- Free shipping on orders over € 100,- (NL)
- Returns possible within 14 days
- Pickup available (Vries, Drenthe)