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A side-by-side comparison of the Dolphin Sigma and Dolphin Explorer E50 — price, filtration, cleaning coverage, brushes and warranty — to help you pick the right Dolphin robotic pool cleaner.
| Feature | Sigma | Explorer E50 |
|---|---|---|
| Price | $2999$2349 | $1799$1629 |
| Lineup | ProLine™ | Explorer™ |
| Best for | The most advanced clean | Wi-Fi + waterline |
| Pool size | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor + Walls + Waterline | Floor + Walls + Waterline |
| Scrubbing brushes | 2 (Active brushes) | 2 |
| Filtration | NanoFilters™ | Dual-layer cartridge |
| Control | myDolphin™ Plus app + Gyro | Wi-Fi + app |
| Warranty | 3 years | 2 years |
The Dolphin Sigma is part of the ProLine™ lineup — The most advanced Dolphin ever, with a gyroscope and app control. It cleans pools up to 50 ft with floor + walls + waterline coverage and NanoFilters™ filtration, backed by a 3 years warranty.
The Dolphin Explorer E50 is part of the Explorer™ lineup — Wi-Fi cleaning with waterline coverage for larger pools. It handles pools up to 50 ft with floor + walls + waterline coverage and Dual-layer cartridge filtration, backed by a 2 years warranty.
The Dolphin Sigma is our pick. As part of the ProLine™ — one of our two top-recommended lineups — it steps ahead of the Dolphin Explorer E50 with floor + walls + waterline coverage, NanoFilters™ filtration and a 3 years warranty.
The Dolphin Explorer E50 is the cheaper option at $1629, but the step up to the Dolphin Sigma buys a meaningfully better clean and longer coverage that's well worth it.
Every Dolphin Max-Series™ and ProLine™ robotic pool cleaner ships free and is backed by a full manufacturer warranty — explore our top-recommended robots and find the right fit for your pool.
Shop Max-Series™ Shop ProLine™ Shop all DolphinThe Max-Series™ and ProLine™ deliver the best cleaning Dolphin makes. See how our top picks stack up head-to-head:
