MarshallBluetooth speaker
Marshall Kilburn III
Marshall Kilburn III is a Bluetooth speaker released in 2025. Key specs: battery life 50 h, output power 50 W, Bluetooth version 5.3, water resistance (IPx) IPx4.
6.7Score
Sound6.8
Battery8.9
Connectivity4.9
Build & features2.4
price range$260–330Reference price converted from EUR
- Year
- 2025
- Brand
Marshall- Popularity
- #531 of 2,013
- Model numbers
- Marshall Kilburn III Cream
50 hBattery life
50 WOutput power
5.3Bluetooth version
IPx4Water resistance (IPx)
2,800 gWeight
YesMultipoint (two devices)
Spec guide
How it ranks among Bluetooth speakers of 2025
Battery life · 50 hTop 15%Output power · 50 WBottom 47%Bluetooth version · 5.3Bottom 40%Water resistance (IPx) · IPx4Bottom 25%Weight · 2,800 gBottom 26%
Compared with Bluetooth speakers released in 2025. Bars show the share of models it beats.
compared with other Bluetooth speakers
Why is Kilburn III a good choice?
Battery life: 50 hbetter than 98% of Bluetooth speakers
Driver size: 101.6 mmbetter than 83% of Bluetooth speakers
Weak points
Water resistance (IPx): IPx4worse than 96% of Bluetooth speakers
Channel count: 2worse than 81% of Bluetooth speakers
Specifications
Full specifications
Sound
- Driver size
- 101.6 mm
- Output power
- 50 W
- Speaker channels
- 2.0
- Channel count
- 2
- Lowest frequency
- 45 Hz
- Highest frequency
- 20,000 Hz
- Spatial / 3D audio
- Yes
- Adjustable equaliser
- Yes
- Stereo
- Yes
Battery & charging
- Battery life
- 50 h
- Charging time
- 3 h
- Quick charge (claimed)
- 20 min → 8 h
- Fast charging support
- Yes
- Power bank function
- Yes
- Mains powered
- No
- Battery powered (portable)
- Yes
Connectivity
- Wireless
- Yes
- Hi-res codec (LDAC / aptX HD / LHDC)
- No
- aptX
- No
- LDAC
- No
- Multipoint (two devices)
- Yes
- LE Audio
- Yes
- Auracast
- Yes
- USB-C
- Yes
- 3.5 mm jack / AUX
- Yes
Smart & streaming
- Companion app
- Yes
Design & build
- Weight
- 2,800 g
- Width
- 273 mm
- Height
- 150 mm
- Depth
- 169 mm
- Protection rating
- IP54
- Water resistance (IPx)
- IPx4
- Dust protection (IP)
- 5
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
In collections
Headphones & speakers: Multipoint (two devices) + output power from 50 w16Headphones & speakers: Multipoint (two devices) + output power from 20 w21Bluetooth speakers: Battery life from 30 h23Headphones & speakers: Battery life from 50 h + spatial / 3d audio25Bluetooth speakers: Multipoint (two devices)28Bluetooth speakers: Spatial / 3D audio28Headphones & speakers: Spatial / 3D audio + battery powered (portable)30Headphones & speakers: Multipoint (two devices) + battery powered (portable)31
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