Loading verified data
Preparing the comparison experience…
The short answer
Bose SoundLink Max Portable Speaker wins this comparison. Choose it if you want less weight in your bag. Bose SoundLink Max Portable Speaker weighs 4.7 lb versus 6.17 lb — 1.48 lb less to carry.
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
Long weekends between charges are its main draw: 50+ hours of playtime, plus phone charging. Bass and treble knobs give hands-on control, though the 6.17 lb body is substantial.
Bettr Score
58.8/100
| Bose SoundLink Max Portable Speaker | Specification | Marshall Kilburn III |
|---|---|---|
$399 | Reference price | $379.99 ✓ Winner |
20 hours | Advertised battery life | 50 hours ✓ Winner |
4.7 lb ✓ Winner | Weight | 6.17 lb |
IP67 | Ingress protectionPersonal preference | IP54 |
4 ✓ Winner | Durability tier | 2 |
5.3 | Bluetooth versionTie | 5.3 |
Yes | Can charge another deviceTie | Yes |
No | USB audio inputTie | No |
No | Auracast or compatible broadcast pairing | Yes ✓ Winner |
No | Floats in waterTie | No |
No | SpeakerphoneTie | No |
The buying advice
Choose Bose SoundLink Max Portable Speaker if you want less weight in your bag. Bose SoundLink Max Portable Speaker weighs 4.7 lb versus 6.17 lb — 1.48 lb less to carry.
Choose Marshall Kilburn III if a longer advertised playtime matters. Marshall Kilburn III advertises up to 50 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker.
Bose SoundLink Max Portable Speaker weighs 4.7 lb versus 6.17 lb — 1.48 lb less to carry. Marshall Kilburn III advertises up to 50 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker. The recorded reference-price difference is $19.01.
Bose SoundLink Max Portable Speaker weighs 4.7 lb versus 6.17 lb — 1.48 lb less to carry.
Marshall Kilburn III advertises up to 50 hours, versus up to 20 hours for Bose SoundLink Max Portable Speaker.
Marshall Kilburn III has the lower recorded reference price: $379.99 versus $399.00, a $19.01 difference.
People's Pick
Loading voting options…
eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$315.00
Item price · shipping unknown
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
eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$349.99
Item + shipping · before tax
$349.99 + $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
Compare Portable Speakers
