Chris Welch on Twitter: "A new, unannounced Sonos product has been registered at the FCC. Model S27. It has Wi-Fi 5 / 802.11ac — a first for Sonos, I think — and
Sonos FCC filing hints it's coming for the UE Boom and other small Bluetooth speakers - The Verge
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SONOS S27 Room Portable Bluetooth Speaker User Guide - Manuals+