The Sonos Arc is a powerful Dolby Atmos speaker that also integrates with the company’s multiroom audio platform.
The Sonos Sub is a subwoofer designed to be paired with a Sonos home theater or bookshelf speakers, supplementing low-end audio with powerful haptic feedback.
The Sonos One SL is just like the Sonos One, minus the always-on microphones and voice assistant integration.
The Sonos One is the best starting point for a Sonos system and is on sale for $176 at both Best Buy and Sonos instead of $220.
The Sonos One SL (on sale for $160 at Best Buy and Sonos, which is a $30 discount) is slightly cheaper and doesn’t have any microphones, so you have to talk to other machines in order to tell it what to do.
The Sonos Roam SL is a portable speaker as well that lacks microphones but supports stereo pairing with either a second Roam SL or another Roam speaker when you’re streaming music via Wi-Fi.
The Roam SL, the version without the microphone, is on sale for $128 at Best Buy and Sonos.