Selective Design, North American (USA & Canada) Distributor for: Architettura Sonora, Waterfall Audio, Gray Sound, Zero Ohm, Xspot Products and Nakymatone. Representing OA in N. A. Selective Design offers products that perform at the top of their categories, and feature design differentiation from the pack of uninspired, alternatives. We look to partner with rep firms and integrators interested in working together to offer discerning clients products they're not going to see anywhere else.