Sonos Arc Ultra Dual Sub Surround Sound PackageSonos Arc Ultra Dual Sub Surround Sound Package Take your home theatre experience to the next level with a system designed for maximum impact and immersive performance. Combining the Sonos Arc Ultra with dual Sub 4 subwoofers and a pair of Era 300 rear speakers, this package delivers powerful, room filling surround sound with exceptional depth and control. Whats Included Sonos Arc Ultra soundbar 2 Sonos Sub 4 wireless subwoofers Pair of Sonos Era 300