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The short answer
Bose SoundLink Max Portable Speaker wins this comparison. Its score is driven by independent sound quality tests. It can charge your phone from its own battery.
Bose
Stereo sound, a rope carry handle and phone charging make this a practical backyard speaker. It offers up to 20 hours of playtime, with 4.7 lb to carry.
Bettr Score
91.6/100
Marshall
360° sound and 32+ hours of playtime in a 1.48 lb speaker. IP67 protection makes it useful for beach bags and weekend trips, with a microphone for hands-free calls.
Bettr Score
64.1/100
| Bose SoundLink Max Portable Speaker | Specification | Marshall Emberton III |
|---|---|---|
$399 | Reference price | $179.99 ✓ Winner |
20 hours | Advertised battery life | 32 hours ✓ Winner |
4.7 lb | Weight | 1.48 lb ✓ Winner |
IP67 | Ingress protectionTie | IP67 |
4 | Durability tierTie | 4 |
5.3 | Bluetooth versionTie | 5.3 |
Yes | Can charge another deviceNot enough data | Not stated / not applicable |
No | USB audio inputNot enough data | Not stated / not applicable |
No | Auracast or compatible broadcast pairingNot enough data | Not stated / not applicable |
No | Floats in waterNot enough data | Not stated / not applicable |
No | Speakerphone | Yes ✓ Winner |
The buying advice
The verified differences do not give Bose SoundLink Max Portable Speaker a clear advantage in this pair. Check its current offer and any requirements outside this comparison before choosing it.
Choose Marshall Emberton III if a longer advertised playtime matters. Marshall Emberton III advertises up to 32 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker.
Marshall Emberton III advertises up to 32 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker.
Marshall Emberton III advertises up to 32 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker.
Marshall Emberton III weighs 1.48 lb versus 4.7 lb — 3.22 lb less to carry.
Marshall Emberton III has the lower recorded reference price: $179.99 versus $399.00, a $219.01 difference.
Marshall Emberton III supports speakerphone calls; the other speaker’s verified specification says it does not.
People's Pick
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$315.00
Item price · shipping unknown
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$139.99
Item + shipping · before tax
$139.99 + $0.00 shipping
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
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