Headphone designer Alex Rosson, known from his time as CEO of Audeze, launched Rosson Audio Design in 2019 to build headphones his way with no compromises. Their first product, the RAD-0, is a well-balanced planar magnetic headphone with powerful bass. Rosson hand-builds their headphones in California, and no two RAD-0 models look exactly the same, featuring creative combinations of colored resin and wood on their exterior shell and different metal finishes for the grille and hardware.