Sound United LLC, parent company to Polk Audio, Definitive Technology, and Polk BOOM, today announced it has completed the acquisition of the D+M Group, owner of the Denon, HEOS by Denon, Marantz, and Boston Acoustics brands. The D+M Group is the largest supplier of audio/video receivers worldwide and a leader in wireless multi-room audio. Sound United is the largest supplier of loudspeakers in North America and a leading supplier of sound bars and wireless music systems. The combined company will be known as Sound United, which will own and operate some of the most prestigious brands in the consumer audio space, providing synergy opportunities for the existing core businesses, while also unlocking the potential to expand the product portfolio and market reach. The sale was finalized on February 28, 2017 and the terms of the sale were not disclosed.