Dolphin seems to have dozens of robots. All with different names, brands, etc. So I’m here to help you cut through the noise.
We’ve tested almost every Dolphin here with my manometer.
One Dolphin measured 2.2 PSI in our suction test. Another measured 1.2. Both say Dolphin on the front, but they are not remotely the same robot. Let me show you which models are worth the money—and which ones I would skip.
Hey guys, Ryan here from ActuallyUsed.
I’ve tested Dolphin robots from nearly every corner of the lineup: the Nautilus models you see everywhere online, the Explorer series, the Max-Series, the ProLine, and even Dolphin’s cordless robots.
And after putting them in the same pool, measuring their suction directly at the intake, comparing the filters, and living with them day to day, here’s the answer upfront:
For most pool owners, I would look at the Dolphin ProLine and Max-Series first.
That means the Premier, Sigma, and Quantum of the ProLine, or the Cayman and Escape of the Max-Series.
It is two different price ranges – but within these 2 – there is a Dolphin for every budget and pool.
Those are the models that consistently give you the features that improve the ownership experience: strong corded power, useful filtration, better automation, and warranties that make more sense for an expensive piece of equipment.
Other lineups, like the Dolphin Nautilus lineup, aren’t necessarily bad. Some of them clean pretty well. But the current Nautilus lineup has a much shorter one-year warranty, and once you compare the performance and features side by side, the value starts falling apart.
And before we get into every model, we need to deal with the biggest question in pool robots right now.
Corded or Cordless?
I would buy corded.
And yes, that includes choosing a corded Dolphin over a cordless Dolphin.
You’d be surprised how few companies make corded pool robots. You basically have Polaris and Dolphin.
Dolphin makes some of the better cordless robots on the market. The Liberty and EON are decent. But I still wouldn’t choose one over a good corded Max-Series or ProLine robot for most pools.
Cordless is marketed like it’s automatically the premium option. No cable sounds cleaner. It looks better in an advertisement. But once you actually own one, the cord disappears and the battery becomes the problem.
A cordless robot isn’t a Roomba. It doesn’t finish cleaning, drive to an underwater dock, recharge itself, and start again tomorrow.
You have to retrieve it, drain it, carry it to the charger, wait several hours, and put it back in the pool. If you want daily cleaning, that can mean touching the robot twice a day—14 interactions a week.
A corded Dolphin with a weekly timer can stay ready to run. You set the schedule, it starts itself, and your main job is rinsing the filter. That’s the automation people think they’re buying when they see the word “robotic.”
Corded also gives the manufacturer more room to build around continuous power instead of conserving a battery. In our testing, the Dolphin Liberty 200 measured about 1.23 PSI at the intake. The corded Dolphin Sigma measured 2.0 PSI, and the Premier measured 2.2 PSI.
That makes the Premier roughly 79 percent stronger than the Liberty 200 in our test setup.
And that power stays available through the entire cleaning cycle. There’s no battery percentage to manage and no reason for the robot to hold back just to finish the run.
There’s another part of this nobody really talks about: cordless is often cheaper to produce, giving brands a higher margin – which is why you see so many online.
A serious corded robot needs a separate low-voltage power supply, a long floating cable, waterproof connections, sometimes a swivel, and a platform designed to run at full power continuously.
There are only a handful of companies still making truly good corded robots.
So don’t assume cordless is the way to go. In pool robots, it often means you’re trading away power and automation – all because some brands want a higher margin.
How We Compare Cleaning Power
We don’t just repeat the advertised gallons-per-hour number.
We use a manometer to measure pressure directly at the suction intake. That gives us a real PSI reading we can compare between robots.
But PSI is only half of the story. You also need to look at how wide the intake is.
A narrow intake with strong pressure can pull hard but cover less area. A wide intake with weak pressure may move over more of the floor but struggle to lift heavier debris. The best designs combine both.
The Dolphin Premier measured 2.2 PSI and uses two 4.75-inch suction ports, giving it about 9.5 inches of combined intake width.
The Dolphin Sigma measured 2.0 PSI with two 5-inch ports, or about 10 inches combined.
The Quantum measured 1.9 PSI through a single 7-inch intake.
The Cayman and Escape both measured 1.5 PSI through 5-inch intakes.
Now, here’s a perfect example of why width by itself doesn’t tell the whole story. The Nautilus CC Plus uses two 5-inch ports, but it measured only 1.48 PSI. The Sigma also has two 5-inch ports, but it measured 2.0 PSI.
Same general intake width. Very different vacuum pressure.
That’s why we test the robots instead of ranking them from the box.
The Dolphin ProLine: The Best of the Best
If you want the best Dolphin cleaners, this is where I would start.
The ProLine is the premium corded group: the Premier, Sigma, and Quantum. These are the robots that combine stronger cleaning systems with the filtration and automation I actually want.
Dolphin Premier — Best Overall
If I had to recommend one Dolphin to the largest number of pool owners, it would be the Dolphin Premier.
It gave us the highest Dolphin suction reading in this group at 2.2 PSI, and the dual 4.75-inch ports create a wide 9.5-inch intake path.
But power is only part of why I like it.
The Premier has Dolphin’s Multi-Media filtration system. You can use pleated NanoFilters for fine dust and silt, standard cartridges for everyday cleaning, or the oversized leaf bag when your pool gets hammered with leaves.
That leaf bag is a huge upgrade too. Most robots make you choose one basket and live with it. The Premier lets you change the entire personality of the cleaner depending on the season.
You also get full floor, wall, and waterline cleaning, a weekly timer, an anti-tangle swivel cable, and a three-year warranty.
The Premier doesn’t have an app, but I honestly don’t care. The controls are simple, the schedule works, and there’s less software to fight with.
If your pool gets a mix of fine dirt and heavy leaves, or you just want the most complete Dolphin without paying for app features, buy the Premier.
Dolphin Sigma — Best High-Tech Dolphin
The Sigma is the one I would choose if you want the best app experience and the most advanced Dolphin platform.
It measured 2.0 PSI, which is slightly below the Premier in our test, but it has the widest combined suction opening of the group at about 10 inches.
It also uses three motors, gyroscope-assisted navigation, dual top-loading filter cartridges, and the MyDolphin Plus app.
The app is useful because the power supply stays outside the water and connected. You can schedule exact days and times, start a cycle remotely, change modes, and manually steer the cleaner while it’s underwater.
That’s very different from a lot of cordless robots that lose their connection as soon as the robot submerges.
The Sigma also includes NanoFilters, cleans the floor, walls, and waterline, uses a swivel cable, and carries the longer three-year warranty.
Would I buy it over the Premier? That depends on the pool.
If you deal with lots of leaves, I prefer the Premier and its leaf bag.
If you want app control, exact scheduling, the most advanced navigation, and don’t mind paying a little more, get the Sigma.
They’re both top-tier. You’re really choosing filtration flexibility versus connected features.
Dolphin Quantum — Best Value
The Quantum is the bridge between the ProLine and Max-Series, and it may be the smartest purchase in the entire Dolphin lineup.
It measured 1.9 PSI, just a step behind the Premier and Sigma. But it has a 7-inch intake, which is 40 percent wider than the 5-inch opening on the Cayman and Escape.
It also gets the XXL MaxBin.
Based on our measurements, the Quantum bin comes out to roughly 480 cubic inches, compared with about 346.5 cubic inches for the standard MaxBin used by the Cayman and Escape. That’s roughly 38 percent more measured volume, before accounting for the internal shape.
In real life, that means fewer interruptions when the pool is full of leaves or debris.
The Quantum also adds NanoFilter panels, full waterline cleaning, a longer swivel cable, a weekly timer, and a two-year warranty.
It’s not as powerful as the Premier. But it gives you the MyDolphin Plus app at a significantly lower cost. Which would be perfect for smaller pools.
For a medium or large inground pool where you want waterline cleaning, a big basket, and true automation without paying for the flagship models, the Quantum is my value pick.
The Dolphin Max-Series: Best Bang for the Buck
The Max-Series is where Dolphin gets the basics right without loading the robot with unnecessary tech.
The three models that matter are the Escape, Cayman, and Quantum.
Dolphin Escape — Best for Above-Ground and Small Pools
The Escape is the simple one.
It measured 1.5 PSI, which is impressive for the price, and it uses a 5-inch suction opening, the top-loading MaxBin, and an active scrubbing brush.
It’s lightweight, easy to rinse, and doesn’t need to be recharged.
What are you giving up? The Escape is primarily a floor cleaner. It doesn’t give you wall cleaning.
One of the best options though is the $99 weekly timer upgrade. It’s probably one of the best upgrades you can do. It seems the timer usually goes for around $300 – so it is a nice upgrade that you don’t want to miss.
So I’d buy the Escape for an above-ground pool, a smaller inground pool, or someone who wants strong basic cleaning without spending for features they won’t use.
It’s also a much better use of the budget than buying a cheap cordless robot just because the box says “cordless.”
Dolphin Cayman — Best Budget Robot
The Cayman is where the Max-Series becomes much easier to recommend for an inground pool.
It keeps the 1.5 PSI reading and 5-inch intake but adds wall climbing and the weekly timer.
That timer is the entire reason I’d spend more for the Cayman over the Escape. It is included, so you won’t have to pay extra. Plus you get the wall climbing and improved performance. You can set it to run automatically instead of walking outside to start every cycle.
You also get the MaxBin and can add NanoFilter panels for fine debris.
The Cayman doesn’t scrub horizontally along the waterline, and it doesn’t have the swivel cable or huge basket of the Quantum. But for a smaller pool, it handles the work that matters at a much lower price.
If your budget is tight but you still want a robot that feels automated, get the Cayman.
The Dolphin Nautilus Lineup
Now we need to talk about one of Dolphin’s most popular lineups: the Nautilus line.
The Nautilus line is everywhere. It’s on Amazon, in big-box stores, and all over the search results. That recognition makes it feel like the safe choice.
But this is where I think a lot of buyers get the worst value.
The current Nautilus lineup carries a one-year warranty. That includes models positioned as premium cleaners, not just the entry-level ones.
Compare that with two years on the Cayman and Quantum, and three years on the Premier and Sigma.
That warranty difference matters because a pool robot isn’t a disposable gadget. It lives around water, heat, chemicals, motors, seals, tracks, and moving parts. If you’re spending premium money, one year isn’t enough coverage in my opinion.
The performance gap can be real too.
The Nautilus CC Plus was 1.48 PSI, but the Cayman measured 1.5 PSI while giving you the MaxBin, optional NanoFilters, a weekly timer, and the longer two-year warranty. And then you have the Premier and Sigma both well over 2 PSI – that both have a 3 year warranty.
Move higher in the Nautilus range and the prices climb, but the one-year warranty remains the problem. The CC Pro, CC Supreme, and Titan may add waterline cleaning, app controls, or upgraded baskets, but I would still compare every one of them directly against the Quantum, Premier, or Sigma before buying.
That doesn’t mean a Nautilus can’t clean your pool. It can.
It means I would only buy one if the discount is large enough to make up for the shorter warranty and the missing Max-Series or ProLine features.
At full price, I’d usually skip it.
What About Explorer, Active, S-Line, T-Line, and M-Series?
Dolphin has a lot of dealer-specific and channel-specific names. Several of these robots share similar internal platforms with slightly different filters, cables, apps, warranties, or accessories.
They can make sense as simple entry-level cleaners, but they’re not competing with the ProLine on power.
The Explorer E70 did much better at 1.7 PSI with a 6.5-inch intake. It’s a solid cleaner. But once its price gets close to the Premier or Sigma, I would rather have the stronger suction, NanoFilter options, and ProLine value.
For the Active, S-Line, T-Line, M-Series, and store-exclusive models, ignore the name on the side for a minute and check five things:
- Does it have a weekly timer?
- Does it clean the actual waterline?
- Can it use a real pleated ultrafine filter?
- What do you get for a warranty?
- And how does the price compare with a Cayman, Quantum, Premier, or Sigma?
A lot of these models are perfectly good. They’re just hard to recommend at full price when the Max-Series and ProLine exist.
Which Dolphin Should You Actually Buy?
Here’s my final ranking.
If you want the best overall Dolphin, buy the Premier. It had the strongest suction in our Dolphin testing, the filtration is the most flexible, and the three-year warranty makes it easier to justify.
If you want the best app-controlled Dolphin, buy the Sigma. You get strong 2.0 PSI suction, a 10-inch combined intake, NanoFilters, exact scheduling, and a real underwater-connected app.
If you want the best value, buy the Quantum. The 7-inch intake, XXL MaxBin, NanoFilters, waterline cleaning, swivel, and weekly timer make it the sweet spot.
If you want the best budget Dolphin, buy the Cayman. It gives you 1.5 PSI, wall climbing, the MaxBin, optional NanoFilters, and a weekly timer without jumping to flagship pricing.
And if you want the best Dolphin for an above-ground or smaller pool, buy the Escape. It’s simple, powerful for the price, and far more practical than constantly recharging a budget cordless robot.
The best pool robot is the one that keeps cleaning without creating another chore. For me, that means constant corded power, a weekly timer, a filter that can actually trap fine debris, and enough warranty coverage to protect the investment.
That’s why the ProLine and Max-Series keep ending up at the top of our testing.
I’m Ryan with ActuallyUsed. Check out our full reviews, side-by-side comparisons, and current deals.
Thanks for watching, and I’ll catch you in the next one.
