Help me choose
Our pick: Dolphin Quantum
Dolphin Quantum is the Pool Express pick in this matchup. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling. Dolphin Quantum includes filtration for sand, pollen and other fine debris.
Proteus
Dolphin Proteus DX4
Inground pools that need floor, wall and waterline 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 Proteus DX4 or Dolphin Quantum: our take
Dolphin Proteus DX4 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. Dolphin Quantum has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Proteus DX4 lists 1 active brush. Dolphin Quantum lists 2 active brushes, SmartNav 2.0 navigation, and Dual DC motors.
Filtration and debris
Dolphin Proteus DX4 includes Basket; Dolphin Quantum includes XXL MaxBin and NanoFilters. Dolphin Quantum has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Proteus DX4 provides a weekly timer and power-supply controls; Dolphin Quantum provides a weekly timer, smartphone control, and included remote control. Both use a 60 ft corded cable with an anti-tangle swivel.
Price, warranty and the decision
Dolphin Proteus DX4 is listed at $1,199 and Dolphin Quantum at $1,649; Dolphin Proteus DX4 is $450 less. Each lists a 2-year manufacturer warranty. Pool Express pick: Dolphin Quantum. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling. Dolphin Quantum includes filtration for sand, pollen and other fine debris. Choose Dolphin Proteus DX4 when it is the better fit for shoppers prioritizing the lower $1,199 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 Proteus DX4 | Dolphin Quantum |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | Yes | Yes |
| 3-year warranty | No | No |
| 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 Proteus DX4 stands out
Dolphin Proteus DX4 is the better fit for shoppers prioritizing the lower $1,199 starting price.
- Is listed $450 lower
- Top-load filter basket
Where Dolphin Quantum stands out
Dolphin Quantum is the better fit for owners who put smartphone control first.
- Uses the high-capacity XXL MaxBin for easier top-load debris handling
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Adds smartphone control
Dolphin Proteus DX4 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 Proteus DX4 | Dolphin Quantum |
|---|---|---|
| Best fit | Inground pools that need floor, wall and waterline cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $1,199 | $1,649 |
| Pool type | Inground | Inground |
| Maximum pool length | Not listed | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | XXL MaxBin, NanoFilters |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App + included remote |
| Cable | 60 ft with anti-tangle swivel | 60 ft with anti-tangle swivel |
| Robot weight | Not listed | 18.3 lb |
| Warranty | 2 years | 2 years |
Choose Dolphin Quantum
Dolphin Quantum is the Pool Express pick in this matchup. Dolphin Quantum uses the high-capacity XXL MaxBin for easier top-load debris handling. Dolphin Quantum includes filtration for sand, pollen and other fine debris.
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