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Sonos Arc Ultra — 9.1.4 Atmos · Sound Motion woofers · eARC
Sonos

Sonos Arc Ultra

9.1.4 Atmos · Sound Motion woofers · eARC

92
/ 100
From $999
VS
Sonos Arc Ultra wins by 5
LG S90TY — $1099
LG

LG S90TY

$1099

87
/ 100
From $1,099
Specdex verdict

Sonos Arc Ultra takes it — here’s why.

In our weighted Specdex score, Sonos Arc Ultra lands at 92 and LG S90TY at 87. That puts Sonos Arc Ultra ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Sonos Arc Ultra if…

  • ✓Massive bass without a sub
  • ✓9.1.4 channel processing
  • ✓Easy TrueCinema tuning

Pick LG S90TY if…

  • ✓Dolby Atmos on most
  • ✓One-box simplicity
  • ✓eARC passthrough
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Winner by scenario

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

Sound

Sonos Arc Ultra

Compared on the sound sub-score

Sonos Arc Ultra leads on sound (94 vs 87).

Design

Sonos Arc Ultra

Compared on the design sub-score

Sonos Arc Ultra leads on design (92 vs 84).

Ease of use

Sonos Arc Ultra

Compared on the ease of use sub-score

Sonos Arc Ultra leads on ease (90 vs 86).

Value for money

Sonos Arc Ultra

Specdex score per dollar at MSRP

Sonos Arc Ultra more score per dollar ($999 vs $1,099).

Sonos Arc Ultra 92
vs
87 LG S90TY

Score breakdown

Sonos Arc Ultra
92
sound 94
features 90
design 92
ease 90
LG S90TY
87
sound 87
features 85
design 84
ease 86

Specs side-by-side

Sonos Arc Ultra versus LG S90TY — full spec comparison
Spec Sonos Arc Ultra LG S90TY
Channels
9.1.4
—
Drivers
14 + Sound Motion woofers
—
Connectivity
eARC HDMI, Wi-Fi 6, BT 5.0
—
Atmos
Dolby Atmos
—

Sonos Arc Ultra

Pros
  • +Massive bass without a sub
  • +9.1.4 channel processing
  • +Easy TrueCinema tuning
Cons
  • −No DTS:X
  • −App glitches
  • −Expensive

LG S90TY

Pros
  • +Dolby Atmos on most
  • +One-box simplicity
  • +eARC passthrough
Cons
  • −Rear surrounds sold separately on some
  • −App quality varies
  • −Cabinet depth needs space

FAQ: Sonos Arc Ultra vs LG S90TY

Which is better, Sonos Arc Ultra or LG S90TY? +

Sonos Arc Ultra scores 92 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.

Is Sonos Arc Ultra worth the price? +

At $999, Sonos Arc Ultra delivers a Specdex score of 92 — strongest in sound.

Is LG S90TY worth the price? +

At $1,099, LG S90TY delivers a Specdex score of 87 — strongest in sound.

Does Sonos Arc Ultra or LG S90TY 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, Sonos Arc Ultra or LG S90TY? +

Sonos Arc Ultra — leads on sound (94 vs 87). Compared on the sound sub-score.

Which is better for design, Sonos Arc Ultra or LG S90TY? +

Sonos Arc Ultra — leads on design (92 vs 84). Compared on the design sub-score.