Help me choose
Our pick: Dolphin Quantum
Dolphin Quantum is the Pool Express pick in this matchup. Dolphin Quantum cleans the floor, walls and waterline instead of stopping below the tile line. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling.
Explorer
Dolphin Explorer E40
Inground pools up to 50 ft that need floor cleaning.
ProLine
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Why Dolphin Quantum is our pick
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Explorer E40 or Dolphin Quantum: our take
Dolphin Explorer E40 and Dolphin Quantum 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. Dolphin Explorer E40 cleans floor; Dolphin Quantum cleans floor, walls, and waterline. Dolphin Quantum's documented cleaning system includes 2 active brushes, SmartNav 2.0 navigation, and Dual DC motors.
Filtration and debris
Dolphin Quantum has documented included filtration—XXL MaxBin and NanoFilters—while the other model's included media is not fully published. Dolphin Quantum has the clearer documented edge for fine silt, pollen and sand. Dolphin Quantum has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Explorer E40 provides no fully published timer, app or remote specification; Dolphin Quantum provides a weekly timer, smartphone control, and included remote control.
Price, warranty and the decision
Dolphin Explorer E40 is listed at $1,599 and Dolphin Quantum at $1,649; Dolphin Explorer E40 is $50 less. Dolphin Explorer E40 lists a 3-year warranty compared with 2 years for Dolphin Quantum. Pool Express pick: Dolphin Quantum. Dolphin Quantum cleans the floor, walls and waterline instead of stopping below the tile line. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling. Choose Dolphin Explorer E40 when it is the better fit for shoppers prioritizing the lower $1,599 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 Explorer E40 | Dolphin Quantum |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | YesEdge | No |
| No recharging between cycles | Not listed | 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 Explorer E40 stands out
Dolphin Explorer E40 is the better fit for shoppers prioritizing the lower $1,599 starting price.
- Carries a 3-year warranty instead of 2 years
- Is listed $50 lower
Where Dolphin Quantum stands out
Dolphin Quantum is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Uses the high-capacity XXL MaxBin for easier top-load debris handling
- Includes filtration for sand, pollen and other fine debris
- Includes a large-debris bin or bag for leaves
Dolphin Explorer E40 vs Dolphin Quantum 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 Explorer E40 | Dolphin Quantum |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $1,599 | $1,649 |
| Pool type | Inground | Inground |
| Maximum pool length | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Not listed | Corded |
| Filtration | Not listed | XXL MaxBin, NanoFilters |
| Scheduling | Not listed | Weekly schedule + app |
| App and remote | Not listed | App + included remote |
| Cable | Not listed | 60 ft with anti-tangle swivel |
| Robot weight | Not listed | 18.3 lb |
| Warranty | 3 years | 2 years |
Choose Dolphin Quantum
Dolphin Quantum is the Pool Express pick in this matchup. Dolphin Quantum cleans the floor, walls and waterline instead of stopping below the tile line. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling.
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