The Dolphin M600 vs Dolphin S400 are two of the most advanced robotic pool cleaners designed for in-ground pools. Manufactured by Maytronics, these smart models offer premium features like full waterline scrubbing, Wi-Fi app control, and powerful dual-brush cleaning systems. However, despite their similarities, each model is tailored for slightly different user needs and pool demands.
In this detailed comparison, we evaluate every critical category to help pool owners make the most informed choice.
Contents
Differences Between Dolphin M600 vs Dolphin S400
Design Comparison
Both the Dolphin M600 and Dolphin S400 are designed for in-ground pools up to 50 feet, and each comes with a 60-foot cable that includes anti-tangle swivel technology, allowing for seamless operation without cord tangling. The M600 is considerably heavier at 24.6 lbs, making it more stable when climbing walls and navigating uneven surfaces. Its build is robust and industrial-grade, designed for heavy-duty performance.
The S400 is much lighter at 16.5 lbs, which makes it easier to lift in and out of the pool. It maintains a compact, user-friendly design that suits those prioritizing portability and ease of storage. While both models feature ergonomic handles and similar dimensions, the M600’s enhanced weight and traction provide superior grip on vertical surfaces.
Winner: Dolphin M600
Its heavier frame, improved traction, and stability make the M600 better suited for more demanding pool environments and larger debris loads.
Cleaning Performance Comparison
The Dolphin M600 leads in raw cleaning power, featuring dual active brushes and a suction rate of 5000 gallons per hour. This higher suction allows the M600 to lift more debris in a single pass. It scrubs the floor, walls, and waterline with precision and offers a multi-layer filtration system that separates fine and ultra-fine particles. Its oversized basket also means fewer stops to clean out filters, which is ideal for pools that collect lots of leaves or sand.
The Dolphin S400 also features dual active brushes and full waterline scrubbing, but its 4000 GPH suction rate is slightly less aggressive. It uses a top-load dual-layer basket that captures fine and ultra-fine debris effectively, but the overall capacity is smaller than that of the M600. Runtime options are 1.5 or 2 hours, compared to the M600’s programmable 1.5, 2, or 2.5-hour modes.
Winner: Dolphin M600
Its stronger suction, larger filtration basket, and longer runtime options provide more robust and consistent cleaning, especially in dirtier or larger pools.
Feature Comparison
Both the Dolphin M600 and S400 support Wi-Fi and Bluetooth connectivity via the MyDolphin Plus app, allowing users to remotely schedule cleanings, start or stop the robot, select cleaning modes, and monitor cleaning progress. Each model also includes a weekly scheduler for hands-free maintenance routines.
The Dolphin M600, however, introduces additional features such as the “Pick Me Up” mode, which commands the robot to surface at the waterline for easy retrieval. It also includes adaptive cycle selection, allowing for 1.5-, 2-, or 2.5-hour cleaning sessions, giving users more flexibility. These enhancements significantly reduce the need for manual intervention and make daily operation more efficient.
The S400 includes most essential smart functions but lacks the Pick Me Up feature and extended cycle flexibility. It provides reliable smart control, but it’s not as autonomous or intuitive as the M600 in practical use.
Winner: Dolphin M600
With Pick Me Up mode and longer cleaning cycle options, the M600 provides a more advanced and user-friendly experience for smart pool maintenance.
Quick Rundown Of Dolphin M600
Quick Rundown Of Dolphin S400
Conclusion
Choose Dolphin S400 if you’re looking for a lightweight, smart robotic cleaner that provides excellent performance for pools with moderate debris and prioritizes portability and ease of use. Its app integration and dual-layer filtration system make it an efficient tool for everyday maintenance with minimal physical effort.
Choose Dolphin M600 if you need maximum cleaning power, smarter automation, and greater convenience. Its advanced features like Pick Me Up, larger basket, stronger suction, and adjustable cleaning cycles make it ideal for users with larger, more debris-heavy pools or those who want a more hands-off maintenance experience.
Overall Winner: Dolphin M600
With superior suction, expanded filtration, intelligent app features, and enhanced cleaning coverage, the Dolphin M600 is the more powerful and future-proof choice for pool owners demanding the highest level of performance and convenience.