Although we generally raved about the performance of Sonos' Play:3 wireless HiFi speakers, one of our chief complaints rested in their slightly muddy bass output. Folks who've felt similarly should be pleased to know that the company has unveiled its first subwoofer, dubbed Sonos Sub. This $600 bass-dropper works wirelessly with your existing Sonos speakers, requiring a quick a setup within the app to ensure it's in-phase and putting out an adequate level of volume. You'll only find a single cable and switch for power on the outside, while looking through its center reveals a duo of "force-cancelling" drivers. Two internal air-ports also flow from top to bottom to aid in the unit's ba