Polk Audio React Sub 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 subwoofer for raw bass impact and a premium smart speaker with immersive spatial audio.
Pick the Polk Audio React Sub if you are building a serious home theater system and need to add deep, powerful bass to your existing setup.
Pick the Sonos Era 300 if you want a versatile, all-in-one speaker for premium music listening with Dolby Atmos and voice control.
- —The Polk React Sub is a single-purpose bass module, while the Era 300 is a complete, standalone speaker.
- —The Era 300 offers smart features and multi-room audio; the React Sub requires a compatible soundbar or system to function.
- —The React Sub prioritizes low-frequency power, the Era 300 prioritizes wide, room-filling soundstage and clarity.
Full specs
Ask anything — we'll answer with Polk Audio React Sub 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.