Multiroom grouping is the grouping of two or more Wi-Fi enabled Bose speakers and/or soundbars, via the Bose Music app. Add another Bose smart speaker and/or smart soundbar to your home at any time to sync with the Bose Music Amplifier and hear the same content everywhere, or different content in different rooms. Compatible Bose products are:  Bose Smart Speakers 300, 450 and 500 Bose Portable Smart Speaker Bose Smart Soundbars 300, 500, 600, 700 and 900, Smart Soundbar 300 Club bundle NOTE: You cannot play synchronised multiroom content with older Bose SoundTouch products or products from other manufacturers (including Amazon and Google) using the Bose Music app. This type of cross-speaker streaming is only available through Apple AirPlay 2.