Help me choose
A stronger Pool Express option
Dolphin Advantage and Dolphin M550 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Advantage
Dolphin Advantage
Inground pools up to 33 ft that need floor and wall cleaning.
M-Line
Dolphin M550
Inground pools up to 50 ft that need floor, wall and waterline cleaning with app control, Pick-Up and a caddy.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Advantage or Dolphin M550: our take
Dolphin Advantage and Dolphin M550 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. Dolphin Advantage is rated for pools up to 33 ft; Dolphin M550 is rated up to 50 ft. Dolphin Advantage cleans floor and walls; Dolphin M550 cleans floor, walls, and waterline. Dolphin Advantage lists 1 active brush. Dolphin M550 lists 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Advantage includes Basket; Dolphin M550 includes Basket and UltraFilter. Dolphin M550 has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Advantage provides a weekly timer and power-supply controls; Dolphin M550 provides a weekly timer and smartphone control. Dolphin Advantage uses a 50 ft corded cable, while Dolphin M550 uses continuous corded power. Dolphin Advantage is listed at 14 lb versus 22.6 lb for Dolphin M550; that 8.600000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Advantage is listed at $699 and Dolphin M550 at $1,999; Dolphin Advantage is $1,300 less. Dolphin Advantage lists a 2-year warranty compared with 3 years for Dolphin M550. Dolphin Advantage and Dolphin M550 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 Advantage | Dolphin M550 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | No | YesEdge |
| 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 Advantage stands out
Dolphin Advantage is the better fit for shoppers prioritizing the lower $699 starting price.
- Is listed $1,300 lower
- Weighs 14 lb versus 22.6 lb
Where Dolphin M550 stands out
Dolphin M550 is the better fit for pools up to 50 ft.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Adds smartphone control
Dolphin Advantage vs Dolphin M550 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 Advantage | Dolphin M550 |
|---|---|---|
| Best fit | Inground pools up to 33 ft that need floor and wall cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning with app control, Pick-Up and a caddy. |
| Starting price | $699 | $1,999 |
| Pool type | Inground | Inground |
| Maximum pool length | Up to 33 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 50 ft | Not listed |
| Robot weight | 14 lb | 22.6 lb |
| Warranty | 2 years | 3 years |
Consider the stronger Pool Express option
Dolphin Advantage and Dolphin M550 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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