The mission and purpose of Celsus Sound is the production of superior portable audio products for discerning music lovers. The brainchild of Jason Lim, a NuForce co-founder and former CEO, Celsus Sound sets quality above all else. Each Celsus Sound device is to be cherished for its build quality, unique features and exemplary performance. For example, solely in terms of build, the Companion One, a high-performance DAC, is milled from a single ingot of aluminum, with top and bottom covers of Corning Gorilla Glass. And what dwells within is no less special.