For context: the Devialet Phantom costs about £1,900 in the UK and sounds absolutely brilliant. A pair, if you're feeling flush, is still far less than Marantz's largest Horizon model.

Taking a leaf from the auto industry, the company has created its own sustainable fabric made from ocean plastics, ‘Marantz Radiance 360-degree Seamless Ecofiber’, which complements the three ...