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QED XT40 Speaker Cable celebrates QED's 40 years of award winning British heritage. Winner of 'Best speaker cable' at the What Hi-Fi? Awards.

Acclaimed by What HI-FI? Magazine; this 'Five Star' award winning pure copper loudspeaker cable boasts QED's advanced X-Tube technology and a massive 4mm2 cross sectional area. This results in a cable that delivers clear sonic advantages over conventional cable designs by maintaining a flat frequency response within the audio band.

We are so confident about the performance of the new XT40, we urge enthusiasts to audition and compare it, not only to their favourite cable but also to alternative models at any price.

All speaker cables priced per single metre unless stated otherwise, Termination & Plugs extra. 



At low frequencies both X-Tube and conventional stranded/solid core speaker cables convey signals in a linear way. However, at high frequencies, X-Tube retains a near-linear signal transfer, whereas the conventional cable fails to conduct uniformly across the entire conductor area. The result is that X-Tube delivers greater detail and fidelity across the audio spectrum which would other wise be lost in ordinary cables.

LARGE 4mm2 cross sectional area

The 4mm2 cross sectional area means XT40 exhibits very low resistance, allowing amplifiers to exert outstanding control over the speakers they are driving. In addition, its large cross sectional area makes it suitable for long cable runs.



  • 1 x 24 x 10/0.146mm 99.999% OFC closely woven braid wound round a hollow LDPE filler rod 2.8mm in diameter with a 100% coverage copper tape wrap in between; a paper wrap and pearl white finish PVC jacket comprise the cable dielectric.
  • Capacitance 59.0 pF/m, Loop Inductance 0.46 µH/m, Loop resistance 8.0 mOhm
  • Dissipation Factor@10 kHz: 0.0576
  • Nominal outside diameter 6.0 mm

QED Reference XT40 Speaker Cable

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