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.
ProLine
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
S-Line
Dolphin S100
Inground and above-ground pools up to 33 ft that need floor and wall 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 Quantum or Dolphin S100: our take
Dolphin Quantum and Dolphin S100 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 Quantum is intended for inground pools, while Dolphin S100 is intended for inground and above-ground pools. Dolphin Quantum is rated for pools up to 50 ft; Dolphin S100 is rated up to 33 ft. Dolphin Quantum cleans floor, walls, and waterline; Dolphin S100 cleans floor and walls. Dolphin Quantum lists 2 active brushes, SmartNav 2.0 navigation, and Dual DC motors. Dolphin S100 lists 1 active brush.
Filtration and debris
Dolphin Quantum includes XXL MaxBin and NanoFilters; Dolphin S100 includes Basket and UltraFilter. Both have documented fine-debris media, so basket capacity and ease of cleaning matter more than fine-particle capability.
Controls and day-to-day ownership
Dolphin Quantum provides a weekly timer, smartphone control, and included remote control; Dolphin S100 provides a weekly timer and power-supply controls. Dolphin Quantum uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin S100 uses a 50 ft corded cable. Dolphin Quantum is listed at 18.3 lb versus 14 lb for Dolphin S100; that 4.300000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Quantum is listed at $1,649 and Dolphin S100 at $849; Dolphin S100 is $800 less. Each lists a 2-year manufacturer warranty. 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 S100 when it is the better fit for shoppers prioritizing the lower $849 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 Quantum | Dolphin S100 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | Yes | Yes |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | Yes | Not listed |
| 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 Quantum stands out
Dolphin Quantum is the better fit for pools up to 50 ft.
- 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
- Uses 2 active brushes instead of 1
- Adds smartphone control
Where Dolphin S100 stands out
Dolphin S100 is the better fit for shoppers prioritizing the lower $849 starting price.
- Is listed $800 lower
- Weighs 14 lb versus 18.3 lb
Dolphin Quantum vs Dolphin S100 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 Quantum | Dolphin S100 |
|---|---|---|
| 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 33 ft that need floor and wall cleaning, with fine debris. |
| Starting price | $1,649 | $849 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 33 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls |
| Power | Corded | Corded |
| Filtration | XXL MaxBin, NanoFilters | Basket, UltraFilter |
| Scheduling | Weekly schedule + app | Weekly schedule |
| App and remote | App + included remote | Power-supply controls |
| Cable | 60 ft with anti-tangle swivel | 50 ft |
| Robot weight | 18.3 lb | 14 lb |
| Warranty | 2 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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