QED XT40i Speaker Cable is a premium, high-performance audio system cable that powerfully clears the entire sound experience. Its radical features make it a cable for those wanting nothing but the best.
QED XT40i Speaker Cable
The multi-award-winning QED XT40i Speaker Cable delivers superior performance. This pure oxygen-free copper cable evolves QED’s established X-Tube technology to guarantee superb timing and stereo imaging and adds the brand new and highly innovative Air Gap dielectric to bring unheard-of rhythmic accuracy and musicality to a cable of this modest price.
Low DC resistance adds unrivalled frequency response to QED XT40i’s potent audio capability. The result is a cable that advances on the class-leading standards set by its predecessor.
Air Gap Dielectric
By increasing the separation of the conductors inside the cable, and therefore the amount of air between them, QED has created a low-loss Air Gap dielectric. This technology reduces the cable’s dissipation and capacitance characteristics, resulting in numerous audible improvements, particularly in timing and rhythmic accuracy. Despite this increased separation, though, XT40i retains the cross-sectional area that makes it ideal for long cable runs.
X-Tube Technology
Crafted from pure oxygen-free copper, the XT40i incorporates a refined version of QED’s proven X-Tube™ technology, ensuring precise timing and accurate stereo imaging. A standout feature of the XT40i is the all-new Air Gap dielectric, an innovative insulation layer that enhances rhythmic precision and musical expression—particularly impressive at this price point. Extremely low DC resistance further improves frequency response, giving the XT40i exceptional audio clarity and range.
Aircore Technology
This amazing cable with Aircore Technology becomes super-efficient and reduces extra distortion. This product can handle a high-level signal carefully and makes a clear, rich sound without being influenced by noise through the compensated losses on the signal path.
Features and Benefits
- Large Cross-Sectional Area: Is capable of carrying more current to produce louder sound.
- X-Tube™ Technology: Diminishes noise and provides clearer sound.
- Transparent Insulation: Not only protects the cable but also makes it look stylish and modern.
- High-Endurance Materials: Resist room and guarantee long-lasting performance.
- Flexible Design: Conveniently adjustable even when encircling tight spaces or complicated arrangements.
- Low Resistance: Reduces energy waste, thereby maintaining good quality of sound throughout.
- Wide Compatibility: Can be used together with various kinds of speakers and amplifiers.
- Optimized for Hi-Fi: Ideal choice for those who listen to music critically and want to hear every little detail.
Summary of QED XT40i Speaker Cable
By increasing the separation of the conductors inside the cable, and therefore the amount of air between them, QED has created a low-loss Air Gap dielectric. This technology halves the dissipation and capacitance characteristics of the cable, and results in numerous audible improvements.
Particularly where timing and rhythmic accuracy are concerned. Despite this increased separation, though, XT40i retains the sort of cross-sectional area that makes it ideal for long cable runs.
Class Leader Setting New Standards
The XT40i has been engineered to deliver superior results at a price point lower than other high-end products. This high-performance cable from QED is a class leader, setting new standards for other cables in the same price range.
In fact, QED is so confident in the performance of the XT40i that they invite everyone curious about the product to give it a try and hear the astonishing sound for themselves. You may be very surprised at how a cable can affect the sound.
Pre-terminated the XT40i is professionally complemented with Airloc™ Heat Shrink 4mm Banana Plugs. This will provide the user with great security and a low resistance connection.

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