The Tonium Pacemaker is one of those bits of kit that makes you wonder what might have been. Launched in 2008, it was a proper pocket-sized DJ system that packed twin decks, a mixer, and effects into something smaller than a paperback. It sold around 100,000 units, won a few awards, got decent coverage in the tech press, and then sort of drifted off into obscurity. Not because it was badly made or didn’t work, but mostly because it arrived right when the iPhone was starting to reshape what we expected from portable gadgets.
Swedish inventor Jonas Norberg showed off the Pacemaker at Sonar Festival in Barcelona in 2007, riding…




