Between the Roam 2 and Boom 2 Plus, the Roam 2 comes out ahead in several specs, while the Boom 2 Plus wins on output power and battery. Overall, the Roam 2 scores 46.6 and the Boom 2 Plus scores 76.4 on our Mars Score.
Which should you buy?
The Boom 2 Plus is the clear pick on raw spec strength, leading by 29.8 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The Roam 2 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the Boom 2 Plus if you care most about output power and battery. Its strongest claims are output power, battery, low-end response.
Both ship with comparable water resistance, stereo pairing, so those specs don't separate the two — focus on the differences below.
Bottom line: the Boom 2 Plus is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sonos - Roam 2 wins
- No decisive advantages.
Why Anker - Boom 2 Plus wins
- ▲Output power — 366.67% more. 140 W vs 30 W.
- ▲Battery — 100.00% more. 20 h vs 10 h.
- ▲Low-end response — 15.00 Hz less. 45 vs 60.
Spec comparison
Audio
| Spec | Sonos - Roam 2 | Anker - Boom 2 Plus |
|---|---|---|
| Output power | 30 W | 140 Wlead |
| Low-end response | 60 Hz | 45 Hzlead |
| Stereo pairing | true | true |
Durability
| Spec | Sonos - Roam 2 | Anker - Boom 2 Plus |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 430 glead | 2700 g |
Battery
| Spec | Sonos - Roam 2 | Anker - Boom 2 Plus |
|---|---|---|
| Battery | 10 h | 20 hlead |
| USB out (powerbank) | false | truelead |
Frequently asked
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.