Superior sound: Enjoy surprisingly rich, room-filling sound from a smart speaker with voice control. Sonos One seamlessly syncs app and touch commands, enabling you to manage music with a single tap of the app or swipe of the speaker. Sonos One is backed by a pair of Class-D amplifiers and custom-built drivers, meticulously tuned to the speaker's unique acoustic architecture. Fits almost anywhere: its small size also makes it perfect for bookshelves, counters and snug spaces. Trueplay speaker tuning: Trueplay fine-tunes Sonos One to ensure you get the very best sound in any room, no matter where you put it.