Quantum
Limited evidenceRead the findings →A well-equipped corded Dolphin that scrubs the floor, walls and waterline, with a swivel and weekly timer. It's aimed at larger in-ground pools. The version on Maytronics' listing has no app, so check which one you're buying.
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Where it sits in Dolphin’s range
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What we know
The Maytronics (US) listing describes a corded robot with two active brushes, a weekly timer, a cable swivel and an ultra-fine filter, but no app. The Pool Nerd spent a few weeks with a 2026 'Quantum Pro' in its test pool, a Wi-Fi version the listing doesn't describe, and praises the basket, the fine filters, the swivel and the way it climbed steps and a shallow ledge. That site is linked to a Dolphin dealer, so we don't count it as an independent test.
The Pool Nerd, hands-on (tested on the Quantum Pro (2026, Wi-Fi power supply); Site linked to a Dolphin dealer)
Which Quantum is which
The Maytronics (US) listing for the Quantum (99996203-SPLSW) shows a weekly timer but no app. The Pool Nerd tested what it calls the 2026 Quantum Pro, which comes with a Wi-Fi power supply and the MyDolphin Plus app, and says the rest of the robot is the same. If app control matters to you, check exactly which version you're getting before you buy.
Walls, waterline and steps
Maytronics lists floor, walls and waterline, per Maytronics (US). The Pool Nerd saw it scrub straight up the wall and along the waterline, and found it climbed tiled steps and a shallow sun ledge, then came back down. Its verdict on the steps: not perfect, but better than most robots it has tried. That's one dealer-linked test in one pool.
Filters and cable
An ultra-fine filter comes in the box alongside the standard one, per Maytronics (US), and the basket lifts out of the top. The Pool Nerd found the big basket handled heavy debris and rates the fine filters highly. There's a swivel on the cable, which The Pool Nerd says stops coverage suffering as the cord twists over time.
What's not checked yet
Our search found dealer pages, affiliate round-ups and The Pool Nerd, a review site linked to a Dolphin dealer. So the basics are still open: how well it really scrubs the waterline, how it copes with steps in other pools, and how reliable it is over several seasons. Until someone independent checks, the performance claims here come from the maker or the dealer-linked site.
Our take
Should you buy the Quantum?
Best for: Large in-ground pools needing floors, walls and the waterline cleaned. Skip it if: You want a stronger record in independent tests before buying.
On paper it's a well-equipped corded robot for a larger in-ground pool, but nobody independent has judged it. The Dolphin Premier also scrubs the waterline, has a leaf bag option and has test results behind it, and the cheaper Dolphin Nautilus CC Plus was liked by independent testers.
The Quantum is one of Dolphin's US online-channel robots, sold through certified web dealers, and sits above the Cayman. It plugs into the mains, scrubs the floor, walls and waterline with two active brushes over a two-hour cycle, and has a weekly timer and a swivel to stop the cable twisting. Maytronics rates it for in-ground and above-ground pools up to fifteen metres and puts an ultra-fine filter in the box.
The Pool Nerd spent a few weeks with a 2026 'Quantum Pro' in its test pool and liked the basket, the fine filters and how it handled steps, but it is linked to a Dolphin dealer. Maytronics' listing shows no app. Some dealers sell that Quantum Pro with a Wi-Fi power supply and app control, so check which version you're buying. It isn't sold in the UK.
Before you buy
The questions people ask about this one
Does it climb walls and clean the waterline?
Maytronics lists floor, walls and waterline, per the specifications. The Pool Nerd, a dealer-linked site, saw it scrub the wall and waterline. We couldn't find an independent test yet.
Can it cope with steps and a deep end?
The Pool Nerd found its 2026 Quantum Pro climbed tiled steps and a shallow ledge and came back down, though not perfectly. That's one dealer-linked test. Maytronics lists it for pools up to 50 feet, per the specifications.
Does it need an app?
The Maytronics US listing shows no app, with a weekly timer on the power supply instead, per the specifications. The Pool Nerd tested a newer 'Quantum Pro' with Wi-Fi and the MyDolphin Plus app, so check which version a dealer is selling.
How do you clean the filter?
Lift the basket out of the top and rinse it, per the specifications. A fine and an ultra-fine filter come in the box; The Pool Nerd found the finer one caught particles the standard filter missed.
Alternatives
Other robotic pool cleaners to compare.
Premier
Why consider it: Bob Vila rated its waterline cleaning and filters, and it offers a leaf bag among three filter options.
The compromise: It has no app, and it's heavy to lift out of the water.
Nautilus CC Plus
Why consider it: Three independent testers found it cleans floors and walls quickly, with filters that are easy to empty.
The compromise: It sometimes sticks on steps, and testers disagree about whether it cleans the waterline.
AquaSense 2
Why consider it: Testers liked its floor and wall cleaning, and it floats to the edge when it's done, so there's no hook needed.
The compromise: It doesn't skim, and steps and fine silt were hit and miss in testing.
Specs
Full specifications
Each specification names its source. Manufacturer claims are not independent test results; unconfirmed figures are labelled.
Owner reviews
Do you own the Quantum?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner accounts are shown separately from independent reviews.
Sources
Where this page’s findings come from
Editorial reviews
- The Pool Nerd: Dolphin Quantum Pro robotic pool cleaner review (2026 model) ↗Pool Nerd ApprovedHands-on · Tested on the Quantum Pro (2026, Wi-Fi power supply) · Site linked to a Dolphin dealer (not counted towards our two-review minimum)
Sources
Videos
- Search YouTube for Dolphin Quantum ↗Search results may include company demonstrations or similar models. Check the source and model name; a demonstration is not an independent performance test.