Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
Choosing between a versatile multi-room specialist and a premium immersive audio hub.
Pick C-SUB if you want a flexible, affordable speaker to expand an existing Audio Pro multi-room system.
Pick Sonos Era 300 if you want top-tier spatial audio and deep integration within the Sonos ecosystem.
Ask anything — we'll answer with C-SUB and Sonos Era 300 in mind for home 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.
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