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Marshall Stanmore III vs Sonos Era 300

Detailed comparison of Marshall Stanmore III and Sonos Era 300. Compare specs, price, pros & cons to find which is best for you.

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Quick Verdict

The Marshall Stanmore III is our top pick with a 4.5★ rating (5,670 reviews). Standout strength: iconic design. The Sonos Era 300 counters with incredible spatial audio. Price difference: £120.

Full Spec Comparison

Marshall

Marshall Stanmore III

£329Best Pick
VS
Sonos

Sonos Era 300

£449
Rating
★★★★4.5
★★★★4.5
Reviews
5,670
3,450
Brand
Marshall
Sonos
type
Home Bluetooth speaker
Smart speaker
drivers
1 tweeter + 2 woofers
6 (4 tweeters + 2 woofers)
connectivity
Bluetooth 5.2, Wi-Fi, AirPlay 2, Spotify Connect
Wi-Fi 6, Bluetooth 5.0, AirPlay 2
power
80W
—
size
350 x 195 x 188mm
160 x 261 x 185mm
weight
4.65kg
—
audio
—
Dolby Atmos, Spatial Audio
assistant
—
Sonos Voice, Alexa
Pros
Iconic designRich warm soundPhysical control knobsMulti-source connectivity
Incredible spatial audioDolby Atmos supportMulti-room with Sonos ecosystemBeautiful design
Cons
ExpensiveHeavy — not portableNo batteryBass can overwhelm in small rooms
Very expensiveNeeds Sonos appNo Google AssistantSpatial audio needs right placement

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Top Rated
MarshallAI VerifiedAI Verified

Marshall Stanmore III

★★★★½4.5(5,670 reviews)
from£329$349
typeHome Bluetooth speaker
drivers1 tweeter + 2 woofers
connectivityBluetooth 5.2, Wi-Fi, AirPlay 2, Spotify Connect
Iconic designRich warm sound
Expensive
Affiliate link
AI RecommendedTop Rated-11%Lightning Deal
SonosAI VerifiedAI Verified

Sonos Era 300

★★★★½4.5(3,450 reviews)
from£399RRP £4493 retailers
typeSmart speaker
drivers6 (4 tweeters + 2 woofers)
audioDolby Atmos, Spatial Audio
Incredible spatial audioDolby Atmos support
Very expensive
Affiliate link

Frequently Asked Questions

Which is better: Marshall Stanmore III or Sonos Era 300?

The Marshall Stanmore III edges ahead with a 4.5★ rating vs 4.5★.Iconic design. However, the Sonos Era 300 wins on incredible spatial audio. Your best choice depends on whether you prioritise music or music.

Is the Marshall Stanmore III worth it over the Sonos Era 300?

The Marshall Stanmore III costs £329 while the Sonos Era 300 is £449. The Marshall Stanmore III is the better value option. Both are excellent for music and home-audio.

Marshall Stanmore III vs Sonos Era 300 — which should I buy in 2026?

Choose the Marshall Stanmore III if you prioritise iconic design. Choose the Sonos Era 300 if you prioritise incredible spatial audio. Both are top-rated in the speakers category.

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