Standalone and legacy models

Dolphin Echo, Oasis, Mercury & Triton Robotic Pool Cleaners

Not every Dolphin belongs to a lettered series. The Echo and Oasis Z5i are current single models in the Maytronics catalog, while the Mercury and the Triton PS pair are long-running favorites still available from Pool Robots. This page keeps them together so you can compare them with the lines that replaced them.

Every Classics model side by side Free shipping · 30-day in-pool trial · expert help
See Every Classics Model Compare Specs
Dolphin Sigma robotic pool cleaner waiting beside a backyard pool
Built for the weekly routine
Is this the right line?

Who the Dolphin Classics Lineup Suits

Buy one of these when the price is right and the pool suits it. The Triton PS and PS Plus are proven 50 ft cleaners with extra-large baskets; the Mercury is a capable mid-range robot; the Echo is a compact 33 ft wall climber; the Oasis Z5i is a current 50 ft app-connected flagship.

The whole Classics line Every model is below with its price, specs and its own page; the comparison table puts them side by side.

Good fit when

  • Pools to 33 ft (Echo, Echo M1) or 50 ft (Oasis, Mercury, Triton)
  • Owners who want a large filter basket (Triton PS Plus)
  • Buyers watching for a deal on a proven model

Strengths

  • Triton PS and PS Plus: extra-large baskets and years of proven service
  • Oasis Z5i carries a 3-year warranty and app control
  • Simple, well-documented machines with parts support

Before you buy

  • Older platforms miss the HyperBrush™ and MaxBin™
  • Echo and Echo M1 are the same robot under two names
  • Newer Max-Series™ robots usually clean faster for similar money

Next step: Compare these with the Max-Series™, the current line at the same prices.

Every model

The Dolphin Classics Lineup

Each card opens the model's own page with the full specs, reviews and buying options.

Dolphin Echo
Dolphin

Dolphin Echo

$749

Best for: In-ground and above-ground pools up to 33 ft, floor & walls

View Details
Dolphin Echo M1
Dolphin

Dolphin Echo M1

$669.99

Best for: Compact in-ground pools up to 33 ft

View Details
Dolphin Oasis Z5i
Dolphin

Dolphin Oasis Z5i

See price

Best for: In-ground pools up to 50 ft, floor, walls & waterline

View Details
Sold Out Dolphin Mercury
Dolphin

Dolphin Mercury

$1049

Best for: Compact, easy cleaning

View Details
3% OFF Dolphin Triton PS
Dolphin

Dolphin Triton PS

$999 $1029.99

Best for: Big filter, simple operation

Buy Now
Dolphin Triton PS Plus
Dolphin

Dolphin Triton PS Plus

$1199

Best for: XL basket for heavy debris

Buy Now
Side by side

Compare the Dolphin Classics Lineup

Every Classics model on published specs and current price.

Model Dolphin Dolphin Echo Dolphin Echo
$749
View details 		Dolphin Dolphin Echo M1 Dolphin Echo M1
$669.99
View details 		Dolphin Dolphin Oasis Z5i Dolphin Oasis Z5i
See price
View details 		Dolphin Dolphin Mercury Dolphin Mercury
$1049
View details 		Dolphin Dolphin Triton PS Dolphin Triton PS
$999
View details 		Dolphin Dolphin Triton PS Plus Dolphin Triton PS Plus
$1199
View details
Power Corded Corded Corded Corded (low-voltage) Corded (low-voltage) Corded (low-voltage)
Pool size In-ground and above-ground up to 33 ft In-ground up to 33 ft In-ground up to 50 ft Up to 33 ft Up to 50 ft Up to 50 ft
Coverage Floor & walls Floor & walls Floor, walls & waterline Floor + walls Floor, walls & waterline Floor, walls & waterline
Control Power supply button One-button MyDolphin™ Plus app Power supply Power supply Weekly smart timer
Filtration Fine Filter Kit Single-level, rinse-clean Fine Filter Kit + Ultra-Fine Filter Kit Top-load cartridge basket Extra-large top-load basket Extra-large basket + leaf bag
Cycle time 2 hours Standard 2.5 hours — — —
Warranty 2 years 2 years 3 years 2 years 2 years 2 years
Dolphin Classics buying guide

What separates the models, and which current Dolphin to price each one against.

The six standalone Dolphins

The Echo cleans floors and walls on pools to 33 ft; the Echo M1 is the same robot under its second name. The Oasis Z5i is a 50 ft floor-to-waterline robot with the myDolphin™ Plus app and a 3-year warranty. The Mercury and the Triton PS and PS Plus are inground cleaners known for their extra-large filter baskets.

What replaced them

For a new purchase at the Triton's price, the Cayman and Quantum are the current equivalents; for the Oasis Z5i, the Sigma. The product pages below show each robot's closest current match with its live price.

In stock at Pool Robots

Frequently Bought Instead

The three robots shoppers of the Dolphin Classics line most often order from us: comparable coverage, in stock today, free shipping and a 30-day in-pool trial.

Quick answers

Dolphin Classics Questions

Is the Triton PS still sold?

Yes. The Triton PS and Triton PS Plus are still while stock lasts.

What is the Dolphin Oasis Z5i?

A 50 ft robot that cleans floor, walls and waterline with app control and a 3-year warranty.

Echo or Echo M1?

The same compact 33 ft wall-climbing robot. The M1 is simply its newer listing name.

More Dolphin lineups

Browse Every Dolphin Line

Dolphin ProLine™ 3 models · The flagship inground line Dolphin Max-Series™ 3 models · HyperBrush™, MaxBin™, SmartNav 2.0™ Dolphin Nautilus 5 models · Dolphin's best-known value line Dolphin Explorer 8 models · Seven models, 30 to 50 ft Dolphin Liberty 4 models · No cable, no power supply by the pool Dolphin Wave 9 models · Built for hotel, club and competition pools Dolphin EON 4 models · Cordless, app-connected, 50 ft Dolphin Active 9 models · Nine models, 30 to 50 ft Dolphin Premium 7 models · Seven models, Max-Series™ features Dolphin S-Series 6 models · Six models, 30 to 50 ft Dolphin T-Series 8 models · Eight models, 30 to 50 ft Dolphin M-Series 3 models · Three flagships, 3-year warranty Dolphin Proteus 5 models · The DX-Series Dolphin Advantage 3 models · Simple, wall-climbing value