Soundbars are sort of a niche for PC gaming, as most will prefer a high-quality bookshelf set or a pair of headphones. But Razer’s making a case for the all-in-one form factor with some surprising new tech. The Leviathan V2 Pro, announced at CES, looks like it’s trying to be someone’s idea of a convergence device thanks to a built-in camera flanked by infrared sensors. But, in fact, it’s tracking the user’s head location, the better to deliver THX-powered 3D audio. Razer It’s a novel approach, to be sure, especially since Razer’s press info claims the Leviathan V2 Pro can convert both standard…