An immersive soundbar that plays well with the rest of the Sonos ecosystem, if you can stomach the price and the app-only setup.
The television I bought last year has speakers that sound like they're coming from inside a filing cabinet, which I discovered roughly twenty minutes after the delivery guys left. I spent a couple of months switching subtitles on rather than solving it, and then a friend with a Sonos setup had us over for a film night and the problem stopped being ignorable. The Arc has been Sonos's flagship soundbar for a few years, eleven drivers including upward-firing ones for Dolby Atmos in a curved cabinet that looks more like a sculpture than the usual black rectangle, and it holds that spot for a reason the spec sheet doesn't get near: it throws sound around a room instead of projecting it forward, louder.
The moment it justified itself in my own living room wasn't an explosion. A jet passed overhead in a film I watched twice last year, and the sound started behind my right shoulder, climbed the wall and crossed the ceiling, and I paused it to say something out loud to an empty room. Atmos height out of one box is a trick, all bounced sound and psychoacoustics, and no bar on earth is a true ceiling-speaker rig, though this is the most convincing version of that trick I've heard inside a house. Since then it's turned up on much quieter material, birdsong up and to the left in a nature documentary, an office ambience sitting somewhere behind my head while I was doing something else entirely.
“It's the closest a single soundbar has gotten me to a room with real height in the sound.”
The center channel keeps voices intelligible while a mix fights around them, and the app's Speech Enhancement setting ended a two-year subtitle habit over the course of a single evening of mumbly prestige drama, which makes dialogue clarity the other headline for me.
Setup runs entirely through the Sonos app, which was an awkward thing to depend on in mid-2024. The app's big rewrite that spring broke features for months and reminded everybody that a speaker controlled only by software inherits that software's bad seasons. I installed mine just after the worst of it and it's been stable since, Trueplay room tuning still takes about ninety seconds and still hands iPhone owners the more accurate version of it, and I'd forgive none of this on a $200 bar. At $899 it's a fair thing to weigh before committing.
There's real low end here for a bar, and action films want a good deal more of it than this gives them, and Sonos sells the $429 Sub Mini as the obvious answer, which puts the one known gap in the product very conveniently next to a price tag.
My advice breaks with the standard advice on one point. If you're budgeting for a single upgrade, buy a pair of Era 100 rears before you buy the sub, even though everybody tells you sub first. Rears are what stop the Arc sounding like a very good soundbar and start it sounding like the film is happening in the room, and I'd take that over deeper explosions every time. The whole system stays inside one app and syncs without the pairing dance that multi-speaker setups normally charge you for.
One HDMI eARC port, no optical input, and no adapter in the box. Anyone with an older television should check their ports before checkout rather than afterwards.
A month in I'm running the Arc with two Era 100s and no sub, and the Sub Mini can wait for a sale. I never worked out how much of the height effect depends on my particular ceiling, which is flat and low and probably doing half the work for it, and Sonos has nothing to say about room shape beyond suggesting you run Trueplay again. My friend's living room has a vaulted ceiling and his Arc sounds noticeably flatter than mine, which he definately does not want to hear about.