Help me choose
Our pick: Dolphin Sigma
Dolphin Sigma is the Pool Express pick in this matchup. Dolphin Sigma adds gyroscope-assisted navigation. Dolphin Sigma cleans floor, walls and waterline.
ProLine
Dolphin Sigma
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Premium
Dolphin Premium 3000
Inground and above-ground pools up to 50 ft with steps or a sun ledge that need full-coverage cleaning with scheduling and modes.
Why Dolphin Sigma is our pick
Dolphin Sigma
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$2,399
Buy Dolphin SigmaDolphin Sigma or Dolphin Premium 3000: our take
Dolphin Sigma and Dolphin Premium 3000 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Dolphin Sigma is intended for inground pools, while Dolphin Premium 3000 is intended for inground and above-ground pools. Both are rated for pools up to 50 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Sigma lists 2 active brushes, SmartNav 3.0 with gyroscope navigation, and Triple commercial-grade DC motors. Dolphin Premium 3000 lists 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Sigma includes Standard filter and NanoFilters; Dolphin Premium 3000 includes Basket and UltraFilter. Both have documented fine-debris media, so basket capacity and ease of cleaning matter more than fine-particle capability. Dolphin Premium 3000 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Sigma provides a weekly timer, smartphone control, and included remote control; Dolphin Premium 3000 provides a weekly timer and smartphone control. Dolphin Sigma uses a 55 ft corded cable with an anti-tangle swivel, while Dolphin Premium 3000 uses continuous corded power. Dolphin Sigma is listed at 24.6 lb versus 17.9 lb for Dolphin Premium 3000; that 6.700000000000003 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Sigma is listed at $2,399 and Dolphin Premium 3000 at $1,449; Dolphin Premium 3000 is $950 less. Each lists a 3-year manufacturer warranty. Pool Express pick: Dolphin Sigma. Dolphin Sigma adds gyroscope-assisted navigation. Dolphin Sigma cleans floor, walls and waterline. Choose Dolphin Premium 3000 when it is the better fit for shoppers prioritizing the lower $1,449 starting price.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Sigma | Dolphin Premium 3000 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | Yes | Yes |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | Yes | Yes |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Yes | Yes |
| 3-year warranty | Yes | Yes |
| No recharging between cycles | Yes | Yes |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Sigma stands out
Dolphin Sigma is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Adds gyroscope-assisted navigation
- Cleans floor, walls and waterline
Where Dolphin Premium 3000 stands out
Dolphin Premium 3000 is the better fit for shoppers prioritizing the lower $1,449 starting price.
- Includes a large-debris bin or bag for leaves
- Is listed $950 lower
- Weighs 17.9 lb versus 24.6 lb
Dolphin Sigma vs Dolphin Premium 3000 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Sigma | Dolphin Premium 3000 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground and above-ground pools up to 50 ft with steps or a sun ledge that need full-coverage cleaning with scheduling and modes. |
| Starting price | $2,399 | $1,449 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Standard filter, NanoFilters | Basket, UltraFilter |
| Scheduling | Weekly schedule + app | Weekly schedule + app |
| App and remote | App + included remote | App control |
| Cable | 55 ft with anti-tangle swivel | Not listed |
| Robot weight | 24.6 lb | 17.9 lb |
| Warranty | 3 years | 3 years |
Choose Dolphin Sigma
Dolphin Sigma is the Pool Express pick in this matchup. Dolphin Sigma adds gyroscope-assisted navigation. Dolphin Sigma cleans floor, walls and waterline.
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