Hi, and thank you for reaching out. This is a great question. We believe you'll see a substantial difference. The Arc has 11 speakers powered by 11 amplifiers. Built in discrete surround sound and top firing speakers that work with Atmos, or help with bass response when not watching Atmos content. The Beam sounds great for it's size, but in a room that large we would recommend the Arc. You can then put the Beam on a secondary Tv in your home! :)
3 years, 9 months ago
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Sonos Customer Care