KEF
KEF LSX II · Sunset Red
Smart/Portable · $1399
92
/ 100
From $1,399
VS
KEF LSX II · Sunset Red wins by 4
Sonos
Sonos Era 300
Dolby Atmos · Wi-Fi 6 · Spatial audio
88
/ 100
From $449
Specdex verdict
KEF LSX II · Sunset Red takes it — here’s why.
In our weighted Specdex score, KEF LSX II · Sunset Red lands at 92 and Sonos Era 300 at 88. That puts KEF LSX II · Sunset Red ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.
Pick KEF LSX II · Sunset Red if…
- ✓Easy multi-room with ecosystem
- ✓App EQ on modern models
- ✓USB-C/AUX input on some
Pick Sonos Era 300 if…
- ✓Genuine Atmos from one box
- ✓Sonos ecosystem polish
- ✓USB-C line-in
KEF LSX II · Sunset Red 92
vs 88 Sonos Era 300
Score breakdown
KEF LSX II · Sunset Red
92 sound 92
features 90
design 88
ecosystem 84
Sonos Era 300
88 sound 90
features 88
design 92
ecosystem 86
Specs side-by-side
| Spec | KEF LSX II · Sunset Red | Sonos Era 300 |
|---|---|---|
| Drivers | — | 6 (4 tweeters, 2 woofers) |
| Connectivity | — | Wi-Fi 6, BT 5.0, USB-C |
| Voice | — | Amazon Alexa |
| Power | — | Class-D amps |
KEF LSX II · Sunset Red
Pros
- +Easy multi-room with ecosystem
- +App EQ on modern models
- +USB-C/AUX input on some
Cons
- −Brand ecosystem lock-in
- −Subscription features on some
- −Bass limits at lower sizes
Sonos Era 300
Pros
- +Genuine Atmos from one box
- +Sonos ecosystem polish
- +USB-C line-in
Cons
- −Sonos app issues persist
- −Needs Atmos-mastered tracks
- −Bass limits vs larger rivals
FAQ: KEF LSX II · Sunset Red vs Sonos Era 300
Which is better, KEF LSX II · Sunset Red or Sonos Era 300? +
KEF LSX II · Sunset Red scores 92 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.
Is KEF LSX II · Sunset Red worth the price? +
At $1,399, KEF LSX II · Sunset Red delivers a Specdex score of 92 — strongest in sound.
Is Sonos Era 300 worth the price? +
At $449, Sonos Era 300 delivers a Specdex score of 88 — strongest in design.
Does KEF LSX II · Sunset Red or Sonos Era 300 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.