Their sleek lines are made possible because the speakers are electrostatic, generating sound by exciting a thin membrane suspended in an electrostatic field. They lean gently backwards but stand steadily on a glinting metal plinth. They’re so stunning, they make their price look rather reasonable – especially when you consider how expensive electrostatic speakers have historically been. Each speaker needs to be plugged in to your mains to charge the electrostatic panel. Yet these are not active designs. The chrome-finished woofer’s juice drives its active cone, joined by two passive radiators. Onboard controls include crossover and bass ‘intensity’.