Sonos has slowly built an empire of loyal users who not only value the quality of the company's wireless speaker lineup, but the ease of use of the system as a whole. For many of these people, the Sonos Sub represents the last piece of the puzzle—you don't start with this speaker, obviously, but it's the component that might just take your enjoyment of the entire system to the next level. At $699, the Sub isn't even remotely cheap. But there's no denying it adds an excellent low-frequency depth, ranging from subtle bass anchoring to serious deep bass thunder, and the Sonos app lets you easily adjust bass levels without leaving your seat. So while the price is high, the results are undeniably excellent. Design Available in glossy black or white models, the 15.3-by-15.8-by-6.2-inch Sub has an interesting shape with a little window (the "acoustic slot") through the middle of its body. It almost resembles a blocky, display font version of the letter O. The size is similar to plenty of...
The Sonos Sub, an expensive wireless subwoofer that's easy to adjust via app, isn't how you start a Sonos system, but it's a terrific addition to complete one.
Powerful, thunderous bass at highest levels; Subtle low-frequency anchoring at more modest volumes; User-controllable bass levels; Attractive design; Can sit vertically or be laid flat; Easy integration into existing Sonos systems
Expensive; Large; Only works with Sonos speakers, cannot be physically connected to a subwoofer output