Sonos' webpages and popular reviews are full of specs, but several real-life factors affect your soundbar's performance more than you'd think. I use my Sonos Arc and Arc Ultra soundbars, Era 300 speakers, Sub 4 subwoofer, and Ace headphones daily, but achieving complete satisfaction required some adjustments. Regardless of whether you have a flagship Arc or Arc Ultra, or a smaller Beam or Ray, location matters. You don't have ceiling speakers, but your Arc or Arc Ultra has upfiring speakers to create this illusion at home. They are compatible with the Sonos Arc, Arc Ultra, Beam, and Ray, and play the same audio format as the soundbar's output.