Along with the Sennheiser HD 280 Pro, the Beyerdynamic DT 770 headphones are one of the more recognizable staples of recording
studio audio gear over the last few decades.
Beginning with its laptops, I've watched hard connectivity options evaporate, from
audio - focused ports like Firewire (which interfaces with legacy recording
studio gear), to universal options like HDMI outputs, ethernet, and even power ports.