The launch five years ago of QED's original XT40 cable was an immediate success. Since then, engineers have developed and refined the formula to produce the best cable in its class. This drive for improvement has resulted in the latest generation Low Loss Air Gap dielectric, to halve the dissipation factor and capacitance of the cable, providing amazing rhythmic precision, musicality and enjoyment. QED's mastery of speaker cable technology has enabled low resistance DC coupling, and outstanding X-Tube™ technology reduces distortion and listener fatigue - even for extended listening periods.