Sonos Era 300 Review: Very Good, With Caveats
Our full Sonos Era 300 review after two weeks of testing: measured performance, battery figures, and whether it is worth £449.
Tech Daily Review Desk
Where it lands
The Sonos Era 300 is Sonos's 2024 entry in a crowded audio market, and at £449 it is competing against some of the strongest hardware we have tested. After a fortnight of daily use, the headline is straightforward: it delivers genuinely convincing spatial audio from one box.
In a sentence: Buy it for genuinely convincing spatial audio from one box. Think twice if this would bother you daily: expensive for a single speaker.
Build and materials
There is nothing experimental here, which is mostly to the Sonos Era 300's credit. The detail worth calling out is that the upward-firing drivers do far more work than the marketing suggests. Against the rest of the audio category it feels considered rather than novel.
Performance
Our testing runs the same suite on every device so figures stay comparable across years. The figure worth quoting is Extras: Spatial audio, Trueplay. That places it comfortably above average for its price bracket.
| Specification | Sonos Era 300 |
|---|---|
| Type | Powered speaker |
| Drivers | Six, including upward-firing |
| Connectivity | Wi-Fi, Bluetooth, USB-C line in |
| Extras | Spatial audio, Trueplay |
How we tested
Every figure quoted above comes from the same protocol, run on every unit in this category. This one spent two weeks of daily listening, including commutes, calls and at least one flight. A blind A/B panel of four listeners, level-matched to within 0.5dB, using the same eleven-track reference playlist across every pair.
| What we measure | How |
|---|---|
| Battery life | Continuous playback at a metered 75dB with noise cancelling on, run to cut-off. |
| Noise cancelling | Attenuation measured against a recorded cabin-noise loop, reported by frequency band rather than as one number. |
| Call quality | Recordings made on a busy street and in a quiet room, judged by the same panel blind. |
| Comfort | Clamping force measured, then a three-hour wear session logged for hot spots. |
| Latency | Audio-to-video offset measured on a fixed test clip over each supported codec. |
We deliberately do not report frequency-response graphs presented without listening notes — they describe a tone, not an experience.
The honest caveat: Fit dominates both isolation and bass response. Our panel has four head shapes; yours is not one of them.
What it does well
- Genuinely convincing spatial audio from one box
- Room correction that measurably helps
- Line-in via USB-C
Taken together, those strengths make it a natural fit for people who want one speaker to fill a room properly.
What we did not like
- Expensive for a single speaker
- Spatial content remains limited
- No Chromecast support
None of these are dealbreakers on their own. Whether they matter depends entirely on how you intend to use it, which is why the section below matters more than the score.
How it compares
The closest alternatives on price are Sonos Ace and Sony WH-1000XM6. All three have been through the same tests, so the figures below are directly comparable rather than collected from different reviews.
| Model | Price | Our score | Standout | Weak point |
|---|---|---|---|---|
| Sonos Era 300 (this review) | £449 | 4 / 5 | Genuinely convincing spatial audio from one box | Expensive for a single speaker |
| Sonos Ace | £449 | 3 / 5 | The best raw sound quality in the category | Minimal integration with a Sonos system |
| Sony WH-1000XM6 | £399 | 5 / 5 | The strongest noise cancellation on low-frequency rumble | Expensive |
The Sony WH-1000XM6 scores higher at £399, so the Sonos Era 300 has to win on genuinely convincing spatial audio from one box rather than on the total.
Is it worth the money?
At £449 the Sonos Era 300 asks £111 more than the category average of £338, against an average score of 4 out of 5 across the audio we have tested. Its own 4 works out at roughly £112 per point. You are paying a premium for a genuinely better result, which is defensible if genuinely convincing spatial audio from one box is what you are buying it for.
If the budget is the binding constraint, the Nothing Ear (3) at £129 is the floor we would still recommend — below that the compromises stop being ones you can live with.
Daily use
Two weeks in, the figure that stopped mattering was type — Powered speaker is more than adequate and you forget about it by the third day. What kept surfacing instead was that expensive for a single speaker, which is easy to shrug off in a spec comparison and harder to ignore at 6pm on a Friday. On the other side, the upward-firing drivers do far more work than the marketing suggests turns out to be the sort of detail you only appreciate after living with the alternative.
Who it suits
Buy the Sonos Era 300 if you are people who want one speaker to fill a room properly. Skip it if this is something you would notice every day: expensive for a single speaker.
Buy it if:
- People who want one speaker to fill a room properly
- You want genuinely convincing spatial audio from one box
- You value room correction that measurably helps
Skip it if:
- You need expensive for a single speaker to be a solved problem
- The Sonos Ace at £449 already covers what you need
- You upgraded within the last two years — the gap is not worth the outlay
Verdict
Buy it for genuinely convincing spatial audio from one box. Think twice if this would bother you daily: expensive for a single speaker.
Score: 4 / 5 · £449 at the time of writing.
Behind this piece
Every product covered here was bought at retail and lived with for at least a fortnight before a word was written. Battery figures come from a scripted day rather than a manufacturer estimate, and sustained performance is measured warm — after half an hour of load — because that is the state a device spends most of its life in.
Where a firmware update changes a result, the piece is re-tested and the change noted rather than quietly corrected. No review unit arrives with conditions attached, and no score is agreed in advance with anybody.
Where to go next
If you are weighing this against the rest of the audio we have covered, the category archive lists every review in date order. The closest comparisons we have published are Sonos Era 300 vs AirPods Pro 3: Is the 2025 Model Worth the Change? and Sonos Era 300 vs Beyerdynamic DT 700 Pro X: Is the 2024 Model Worth the Change?.
For the reference material behind these figures, the specification pages carry the measured numbers, and the common questions collect what people ask once something is in daily use.
