STANMORE III vs Sonos Era 300
Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
This is a choice between a dedicated stereo speaker built for pure music playback and a modern multi-room smart speaker designed for immersive audio and voice control.
Pick the Marshall Stanmore III if your pro use is a studio, shop, or venue needing a simple, iconic, and durable speaker for loud, straightforward stereo sound.
Pick the Sonos Era 300 if your pro use is a modern office, showroom, or home studio prioritizing spatial audio, seamless multi-room setups, and smart integrations.
- —Stanmore III offers classic analog controls and a road-ready build, but lacks the smart ecosystem and multi-room features of the Era 300.
- —Era 300 delivers advanced spatial audio and voice control, but depends on an app and Wi-Fi, unlike the Stanmore's plug-and-play simplicity.
- —The Stanmore is a standalone stereo workhorse, while the Era 300 is a system-focused hub designed for a connected, modern audio environment.
Full specs
Ask anything — we'll answer with STANMORE III and Sonos Era 300 in mind for pro use.
Pindear may earn a commission when you buy through these links. Winners are determined by numeric spec comparisons only; non-numeric features (app quality, ecosystem, real-world feel) are covered in the verdict.