Marshall - Emberton III vs Sonos - Era 100 Portable (rumored)

The Emberton III is the clear pick on raw spec strength, leading by 22.8 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.

Pick the Emberton III if you care most about battery and water resistance. The biggest gaps in its favor are battery, water resistance, output power.

Pick the Era 100 Portable (rumored) if you care most about low-end response. Its strongest claims are low-end response.

Both ship with comparable stereo pairing, so those specs don't separate the two — focus on the differences below.

Bottom line: the Emberton III is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.