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Head-to-head

Roborock - Qrevo Master vs Roborock - S9 MaxV Ultra

Last updated · How Mars Score works
Qrevo MasterROBOROCKRENDER
Probe A
Roborock
Qrevo Master
64.9/ 100C
Cleaning64· 45%
Navigation· 30%
Autonomy66· 25%
S9 MaxV UltraROBOROCKRENDER
Probe B
Roborock
S9 MaxV Ultra
85.1/ 100A
Cleaning95· 45%
Navigation· 30%
Autonomy66· 25%
Quick verdict

Between the Qrevo Master and S9 MaxV Ultra, the Qrevo Master comes out ahead in noise, while the S9 MaxV Ultra wins on suction and water tank. Overall, the Qrevo Master scores 64.9 and the S9 MaxV Ultra scores 85.1 on our Mars Score.

Buying advice

Which should you buy?

The S9 MaxV Ultra is the clear pick on raw spec strength, leading by 20.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Qrevo Master if you care most about noise. The biggest gaps in its favor are noise.

Pick the S9 MaxV Ultra if you care most about suction and water tank. Its strongest claims are suction, water tank.

Both ship with comparable mopping, lidar, battery life, so those specs don't separate the two — focus on the differences below.

Bottom line: the S9 MaxV Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Roborock - Qrevo Master wins

  • Noise — 1.00 dB less. 64 vs 65.

Why Roborock - S9 MaxV Ultra wins

  • Suction — 120.00% more. 22000 Pa vs 10000 Pa.
  • Water tank — 20.00% more. 300 ml vs 250 ml.
Full readout

Spec comparison

Cleaning

SpecRoborock - Qrevo MasterRoborock - S9 MaxV Ultra
Suction10000 Pa22000 Palead
Moppingtruetrue
Water tank250 ml300 mllead
Dustbin300 ml350 mllead
Carpet detectiontruetrue

Navigation

SpecRoborock - Qrevo MasterRoborock - S9 MaxV Ultra
Lidartruetrue
Camera navigationtruetrue
AI obstacle avoidancetruetrue
Max climb25 mm40 mmlead

Autonomy

SpecRoborock - Qrevo MasterRoborock - S9 MaxV Ultra
Battery life180 min180 min
Self-empty basetruetrue
Self-wash moptruetrue
Self-dry moptruetrue
Noise64 dBlead65 dB
Reader questions

Frequently asked

Which has stronger suction, Qrevo Master or S9 MaxV Ultra?+

S9 MaxV Ultra delivers 22000 Pa vs 10000 Pa.

Do Qrevo Master or S9 MaxV Ultra mop?+

Both can mop.

Which has a self-emptying base, Qrevo Master or S9 MaxV Ultra?+

Both ship with a self-emptying base.

Drill down

Spec-level deep dives

By manufacturer

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