Sonos Sub 4 Subwoofer (Black or White)

Dual Sonos-engineered drivers generate deep, dynamic bass
Ported enclosure enhances the bass response and low-frequency output
Transform your home theater experience when you pair with Sonos Arc Ultra, Arc, or Beam
Bring your music to life when you pair with Sonos Five, Era 300 or Era 100
Force-canceling acoustic architecture virtually eliminates distortion, buzz, and rattle