Help me choose
Our pick: Dolphin Premier
Dolphin Premier is the Pool Express pick in this matchup. Dolphin Premier adds swappable Multi-Media filtration and an oversized leaf bag for changing debris. Dolphin Premier includes a large-debris bin or bag for leaves.
ProLine
Dolphin Premier
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris and heavy leaves.
ProLine
Dolphin Sigma
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Why Dolphin Premier is our pick
Dolphin Premier
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris and heavy leaves.
$1,999
Buy Dolphin PremierDolphin Premier or Dolphin Sigma: our take
Dolphin Premier and Dolphin Sigma 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
Both robots are intended for inground pools. Both are rated for pools up to 50 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Premier lists 2 active brushes, SmartNav 2.0 navigation, and Dual commercial-grade motors. Dolphin Sigma lists 2 active brushes, SmartNav 3.0 with gyroscope navigation, and Triple commercial-grade DC motors.
Filtration and debris
Dolphin Premier includes Standard filter, NanoFilters, Oversized leaf bag, and Multi-Media; Dolphin Sigma includes Standard filter and NanoFilters. Both have documented fine-debris media, so basket capacity and ease of cleaning matter more than fine-particle capability. Dolphin Premier also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Premier provides a weekly timer, power-supply controls, and optional remote control; Dolphin Sigma provides a weekly timer, smartphone control, and included remote control. Dolphin Premier uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin Sigma uses a 55 ft corded cable with an anti-tangle swivel. Dolphin Premier is listed at 20.3 lb versus 24.6 lb for Dolphin Sigma; that 4.300000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Premier is listed at $1,999 and Dolphin Sigma at $2,399; Dolphin Premier is $400 less. Each lists a 3-year manufacturer warranty. Pool Express pick: Dolphin Premier. Dolphin Premier adds swappable Multi-Media filtration and an oversized leaf bag for changing debris. Dolphin Premier includes a large-debris bin or bag for leaves. Choose Dolphin Sigma when it is the better fit for owners who put smartphone control first.
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 Premier | Dolphin Sigma |
|---|---|---|
| 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 | YesEdge | No |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| 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 Premier stands out
Dolphin Premier is the better fit for shoppers prioritizing the lower $1,999 starting price.
- Adds swappable Multi-Media filtration and an oversized leaf bag for changing debris
- Includes a large-debris bin or bag for leaves
- Is listed $400 lower
- Weighs 20.3 lb versus 24.6 lb
Where Dolphin Sigma stands out
Dolphin Sigma is the better fit for owners who put smartphone control first.
- Uses a triple-motor cleaning system
- Adds gyroscope-assisted navigation
- Adds smartphone control
Dolphin Premier vs Dolphin Sigma 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 Premier | Dolphin Sigma |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris and heavy leaves. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $1,999 | $2,399 |
| Pool type | Inground | Inground |
| 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, Oversized leaf bag, Multi-Media | Standard filter, NanoFilters |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App + included remote |
| Cable | 60 ft with anti-tangle swivel | 55 ft with anti-tangle swivel |
| Robot weight | 20.3 lb | 24.6 lb |
| Warranty | 3 years | 3 years |
Choose Dolphin Premier
Dolphin Premier is the Pool Express pick in this matchup. Dolphin Premier adds swappable Multi-Media filtration and an oversized leaf bag for changing debris. Dolphin Premier includes a large-debris bin or bag for leaves.
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