Introduction
The Dreame L50s Pro Ultra, the Roborock Qrevo Edge 2 and the Roborock Qrevo Edge S5A represent three distinct propositions within the robot vacuum segment with multifunction base. The Dreame model, launched in 2026, competes directly with the Roborock Qrevo Edge 2, which arrived on the market in May of that same year. The Qrevo Edge S5A, from 2024, is positioned as a more accessible alternative within the Roborock family.
Each of these units incorporates a multifunction base that washes and dries the mops, automatic dust emptying and advanced navigation systems. However, the differences in power, mopping systems and navigation capabilities mark clearly differentiated usage profiles.
Power and Suction
The difference in suction power is considerable. The Dreame L50s Pro Ultra delivers 30,000 Pa, a figure that exceeds the Qrevo Edge 2 by 5,000 Pa and practically doubles the 18,500 Pa of the S5A model. In practice, this greater capacity translates into better performance on carpets and more effective pick-up of embedded particles.
The brushing system marks another important difference. The Dreame robot vacuum employs dual HyperStream anti-tangle brush, whilst both Roborock models integrate the DuoDivide system. Both designs are intended to reduce hair tangles, although they work differently: the HyperStream uses two brushes anchored at one end, whilst the DuoDivide pushes hairs towards the central gap for direct suction.
An exclusive advantage of the Dreame is the ability to raise both the main and side brush during mopping. The Qrevo Edge 2 only raises the main brush, and the S5A doesn't raise either. This allows the Dreame model to transition between vacuuming and mopping areas without dragging dirt with the brushes. All three units feature extendable side brush to better reach corners.
Mopping
The mopping system shows relevant technical differences. The Qrevo Edge 2 stands out with rotating mops that reach 230 RPM and exert 8N pressure, values superior to the 180 RPM of the Dreame and the 200 RPM of the S5A. This higher speed and pressure favours the removal of stubborn stains.
All three robots extend the mops to mop edges. The Dreame also incorporates the RoboSwing system, which performs a lateral movement to introduce the mop under furniture and ledges. Mop lifting varies slightly: 12 mm on the Edge 2, 10.5 mm on the Dreame and 10 mm on the S5A. Minimal differences that in practice barely influence standard thickness carpets.
Mop washing in the base presents different temperatures. The Dreame reaches 100°C, the Edge 2 reaches 80°C and the S5A 75°C. Higher temperatures favour disinfection and removal of adhered grease. Drying also varies: the Edge 2 dries at 55°C, whilst the Dreame and S5A do so at 45°C.
Only the Dreame and the Edge 2 can automatically detach the mops at the base when only vacuuming is desired, a function that the S5A doesn't offer. The Dreame is the only one that incorporates a detergent tank in the base, dispensing it during mop washing. All three models detect dirt both on the mops and on the floor to adjust cleaning intensity.
Navigation System
The Qrevo Edge 2 incorporates retractable LiDAR, a system that allows reducing the robot's height to 79.8 mm, which facilitates access under low furniture. The Dreame and the S5A use conventional LiDAR turret, reaching 103.8 mm and 98 mm respectively.
The Roborock Edge 2 robot vacuum recognises up to 280 different obstacles, compared to 220 for the Dreame. The S5A doesn't specify this figure. The Dreame mounts dual AI camera, the Edge 2 a single camera, and the S5A lacks this system. The presence of a camera enables pet recognition, curtain detection, remote access and LED for night vision, functions available on the Dreame and the Edge 2 but absent on the S5A.
All three units incorporate front 3D laser sensor to avoid obstacles, except the S5A which doesn't include it. Regarding artificial intelligence, the Dreame uses CleanGenius 3.0, the Edge 2 SmartPlan 3.0 and the S5A SmartPlan 2.0. AI stain recognition is only present on the Dreame and the Edge 2.
Autonomy and Battery
All three robots mount a 5,200 mAh battery. The Qrevo Edge 2 offers 188 minutes of autonomy and the S5A 180 minutes. The Dreame doesn't specify this data, although with the same battery capacity similar values can be expected. This autonomy is sufficient for homes of up to 200-250 m² in a single cycle.
The robot's dust bin varies: 325 ml on the S5A, 250 ml on the Dreame and 240 ml on the Edge 2. Greater capacity means fewer emptyings during cleaning, although as all have automatic emptying at the base, this difference loses relevance. The robot's water tank is 80 ml on the Dreame and the S5A, whilst the Edge 2 remains at 67 ml.
Smart Functions
The ability to overcome obstacles marks a notable difference. The Dreame can negotiate single steps of up to 22 mm and double steps of 40 mm. Both Roborock models are limited to 20 mm. This is decisive in homes with level transitions between rooms or pronounced thresholds.
The Dreame and the Edge 2 incorporate their own voice assistant, in addition to compatibility with Alexa and Google Home. The S5A only supports external assistants. This function allows giving commands directly to the robot without the need for other devices.
Multifunction Cleaning Base
All three bases perform automatic emptying, mop washing and drying. The Dreame has a 3.2-litre dust bag, superior to the 2.7 litres of both Roborock models. In water tanks, the Dreame offers 4.5 litres of clean water and 4 litres of dirty; the Roborock models have 4 litres and 3.5 litres respectively. Greater capacity reduces the frequency of filling and emptying.
The washing tray self-cleaning is third generation on the Dreame, whilst the Roborock models use version 2.0. Only the Dreame has an optional kit for connection to water pipes, although it must be purchased separately.
Dimensions
The Qrevo Edge 2 stands out for its height of just 79.8 mm, allowing access under furniture where the other two models cannot reach. The S5A measures 98 mm and the Dreame reaches 103.8 mm. The diameter is practically identical: 350 mm on the Dreame and 352 mm on the Roborock models.
The bases have the same width (340 mm), but vary in height and depth. The Dreame base measures 590 mm high and 457 mm deep; the Roborock bases reach 521 mm high and 487 mm deep. It's advisable to measure the available space before deciding.
Real-world experience
For homes with pets, the Dreame offers clear advantages: greater suction power, dual anti-tangle brush and camera recognition capability. The Edge 2 also recognises pets and has a good anti-tangle system, although with less power. The S5A, without camera or specific recognition, is less suitable for households with animals.
In multi-level houses or with high thresholds, the Dreame comfortably surpasses the Roborock models thanks to its ability to negotiate steps of up to 40 mm. The Roborock models can become blocked when facing obstacles greater than 20 mm.
If the priority is accessing under low furniture, the Qrevo Edge 2 is unbeatable with its 79.8 mm height. The retractable LiDAR makes the difference on sofas, beds or furniture with little separation from the floor.
For those seeking the most intensive mopping, the Edge 2 stands out for its 230 RPM and 8N pressure, in addition to washing the mops at 80°C and drying them at 55°C. The Dreame counters with washing at 100°C and integrated detergent tank, which favours disinfection and deep cleaning of the mops.
Conclusion: Which to choose?
Choose the Dreame L50s Pro Ultra if you're looking for the highest suction power on the market, you live in a house with pets and abundant hair, you need to overcome pronounced steps or level transitions between rooms, you value mop washing at maximum temperature and want an integrated detergent tank. Also if you prefer a robot that raises brushes during mopping to avoid dragging dirt. Its larger water tanks and dust bag reduce maintenance.
Choose the Roborock Qrevo Edge 2 if the priority is accessing under very low furniture thanks to its 79.8 mm height, you're looking for the most powerful mopping system with 230 RPM and 8N pressure, you value navigation with retractable LiDAR and recognition of up to 280 obstacles, or you prefer the reliability and app ecosystem of Roborock. Ideal for homes without large level changes where the reduced height makes the difference.
Choose the Roborock Qrevo Edge S5A if you're looking for a more economical option within the Roborock range, you don't need AI camera or advanced recognition functions, your home doesn't have pets or major intelligent navigation requirements, and you value brand reliability at a more competitive price. It offers good overall performance with complete multifunction base, although without the most advanced features of its bigger siblings.
