Samsung Shape M7 Wireless Audio Speaker review: A solid multi-room audio system

Samsung is mounting a serious challenge to Sonos in the multi-room audio market. Samsung’s Shape product line includes the M7 Wireless Audio Speaker reviewed here; a pair of smaller siblings, the Shape M5 and M3; several Wireless Audio Soundbars; and a Link Mate box that lets you add non-networked audio gear to its system. As with Sonos’