Thank you for your question! You can add Arc later and group them to play the same thing at the same time. Either Tv audio or whatever is playing from the Amp. You can also use the Amp as rears if you would like just keeping in mind that the those bookshelves now act as rears with Amp and no longer will be their own rooms if you use them as rears.
2 years, 7 months ago
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Sonos Customer Care