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KEF LS50 Wireless II — Smart/Portable · $2799
KEF

KEF LS50 Wireless II

Smart/Portable · $2799

94
/ 100
From $2,799
VS
KEF LS50 Wireless II wins by 6
Sonos Era 300 — Dolby Atmos · Wi-Fi 6 · Spatial audio
Sonos

Sonos Era 300

Dolby Atmos · Wi-Fi 6 · Spatial audio

88
/ 100
From $449
Specdex verdict

KEF LS50 Wireless II takes it — here’s why.

In our weighted Specdex score, KEF LS50 Wireless II lands at 94 and Sonos Era 300 at 88. That puts KEF LS50 Wireless II ahead by 6 points — a decisive margin driven mostly by its strengths in the categories below.

Pick KEF LS50 Wireless II 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
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Sound

KEF LS50 Wireless II

Compared on the sound sub-score

KEF LS50 Wireless II leads on sound (94 vs 90).

Features

KEF LS50 Wireless II

Compared on the features sub-score

KEF LS50 Wireless II leads on features (92 vs 88).

Design

Sonos Era 300

Compared on the design sub-score

Sonos Era 300 leads on design (92 vs 88).

Value for money

Sonos Era 300

Specdex score per dollar at MSRP

Sonos Era 300 more score per dollar ($449 vs $2,799).

KEF LS50 Wireless II 94
vs
88 Sonos Era 300

Score breakdown

KEF LS50 Wireless II
94
sound 94
features 92
design 88
ecosystem 84
Sonos Era 300
88
sound 90
features 88
design 92
ecosystem 86

Specs side-by-side

KEF LS50 Wireless II versus Sonos Era 300 — full spec comparison
Spec KEF LS50 Wireless II 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 LS50 Wireless II

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 LS50 Wireless II vs Sonos Era 300

Which is better, KEF LS50 Wireless II or Sonos Era 300? +

KEF LS50 Wireless II scores 94 on our weighted rubric — ahead by 6. Your best pick depends on the sub-scores above.

Is KEF LS50 Wireless II worth the price? +

At $2,799, KEF LS50 Wireless II delivers a Specdex score of 94 — 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 LS50 Wireless II 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.

Which is better for sound, KEF LS50 Wireless II or Sonos Era 300? +

KEF LS50 Wireless II — leads on sound (94 vs 90). Compared on the sound sub-score.

Which is better for features, KEF LS50 Wireless II or Sonos Era 300? +

KEF LS50 Wireless II — leads on features (92 vs 88). Compared on the features sub-score.