Sonos Ultimate Home Theatre Completion SetSonos Sub 4 + Era 300 Surround Package Enhance your listening experience with a powerful combination designed to add depth, space, and immersion to your existing Sonos system. This package pairs the Sonos Sub 4 with a set of Era 300 speakers, delivering rich bass and expansive surround sound for both movies and music. Whats Included Sonos Sub 4 wireless subwoofer Pair of Sonos Era 300 speakers Deeper Bass, Greater Impact The Sub 4 adds weight and