Matthew Williams’ 1017 ALYX 9SM is so often focused on the innovative, and that’s exactly what this partnership with Bang & Olufsen represents. It’s a rework of the Danish label’s wireless BeoPlay E8 headphones, with all the usual techy features remaining — intuitive touch controls, an omnidirectional microphone and transparency mode — only they’re coloured in all-black and come with a metal and leather case to reflect Williams’ industrial aesthetic.