Have you got a system worth treating to £10/metre speaker cables? If so, then QED thinks it's new XT40 cable is just the ticket - and that's why the company is laying down "The QED XT40 Challenge".

Why you can trust What Hi-Fi? Our expert team reviews products in dedicated test rooms, to help you make the best choice for your budget. Find out more about how we test. This new QED cable might be a ...

In 1945, preliminary design began on Allison's first turboprop engines. One was the T40 (Allison Model 500), which consisted of two T38 power sections driving co-axial contrarotating propellers ...