The EPOS DNA can be traced as far back as 1904. In its incarnation as Sennheiser Communications, it formed part of the Danish company Demant, which manufactured medical hearing aids.

A growing number of businesses have embraced headsets to improve communication with colleagues, customers and also for online meetings. Headsets are not the only preserve of those in high office, but lots of retail stores use them as well to converse with team members in the stock rooms or the back office, for instance. Even...