# How loud are the Roborock S8 MaxV Ultra and Roomba j9+ during operation?

> Noise level comparison for robot vacuums

*Published: 2026-03-20 | Updated: 2026-03-20 | Source: https://shopsavvy.com/answers/how-loud-are-roborock-s8-maxv-ultra-and-roomba-j9*

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## Product: Roborock S8 MaxV Ultra
**Brand:** Roborock

Neither of these vacuums is quiet. But they're not terrible either.

The [Roomba j9+](https://www.amazon.com/dp/B0C415NHBM?tag=shopsavvy-20) runs at about 65 decibels during normal cleaning, roughly the volume of a normal conversation. You can hear it, but you can talk over it and watch TV without cranking up the volume too much.

The [Roborock S8 MaxV Ultra](https://www.amazon.com/dp/B0CSKBXQ68?tag=shopsavvy-20) is similar at normal settings. It gets louder when you crank up that 10,000 Pa suction. That motor is powerful, and it sounds like it.

## Day-to-Day Operation

Both vacuums are fine for daytime use while you're home:
- TV watching without major issues
- Conversations nearby
- Work from home (mute yourself when it's in the same room as your call)

The [Roomba j9+](https://www.amazon.com/dp/B0C415NHBM?tag=shopsavvy-20) has been praised for sounding "less harsh" than older Roombas. iRobot put effort into making the acoustic profile less annoying.

## The Volume Spike: Max Power Mode

If you use the [S8 MaxV Ultra's](https://www.amazon.com/dp/B0CSKBXQ68?tag=shopsavvy-20) maximum suction regularly, expect significantly more noise. That 10,000 Pa doesn't come free. The motor whine is noticeable.

## The Surprise: Self-Emptying Is LOUD

Nobody warns you about this. When either vacuum returns to empty its dustbin, there's a brief but intense suction noise. It only lasts 10-15 seconds, but if you're on a video call when your vacuum empties, your coworkers will hear it.

## Can You Sleep Through It?

Running either vacuum in your bedroom while sleeping? Probably not for light sleepers. Both support scheduling, so you can run them while out or sleeping in a different part of the house.

The [S8 MaxV Ultra](https://www.amazon.com/dp/B0CSKBXQ68?tag=shopsavvy-20) has a quiet mode that reduces noise (and cleaning performance), useful for working from home or noise-sensitive pets.

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*Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from thousands of retailers, and analysis of user reviews to give you a well-rounded picture.*