SONOS | Sub Wireless Subwoofer 3rd Gen Black | SUBG3UK1BLKFEATURES: Sub (Gen 3) brings the same iconic design and bold bass with updated internals including increased memory, processing power, and a new wireless radio. Two force cancelling drivers at the centre of Sub face inwards to eliminate vibration and rattle, ensuring all you hear is pure bass. Add more dimension to your home cinema listening when you pair Sub with the all new Sonos Arc, Beam, Playbar, or Playbase. Enjoy surround sound when you expand