Sonos Launches New $999 Arc Ultra Soundbar and $799 Sub 4 MacRumorsSonos announces the “breakthrough” Arc Ultra soundbar and Sub 4 The VergeMassive new Sonos Arc Ultra leaks reveal 9.1.4-channel sound with next-gen ‘Sound Motion’ speakers TechRadarSonos’ $999 Arc Ultra is a bass powerhouse in a (relatively) small package Engadget