Name: Sonos Arc Ultra + Sonos Sub 4 Black
Brand: Sonos
SKU: 956404
Price: 1633 EUR
Availability: InStock
Rating: 8.7 (24 reviews)

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Product information

Pros and cons

According to our soundbar expert

With this bundle of a soundbar and subwoofer, you can enjoy deep bass and a clear sound.
Thanks to True Dolby Atmos, the sound reflects via the ceiling and walls to your seat so you hear spatial audio.
You can clearly understand voices because of the voice enhancement.
You can't use the soundbar with the Google Assistant smart home platform.

Description

With the Sonos Arc Ultra + Sonos Sub 4, you get a soundbar with subwoofer. This way, you can enjoy a clear sound and deep bass. The True Dolby Atmos reflects the sound via the ceiling and walls to your seat, so the audio sounds spatial. For example, you hear the plane from the movie fly in your room. With the voice enhancement, you can enhance the voices so they're clearly understandable. The design of the subwoofer ensures that you hear barely no vibrations or distortions, so you can enjoy a clear and deep bass.

Tips for using this product

Included by default

Sonos Arc Ultra Black

Power cord
HDMI cable

Sonos Sub 4 Black

Power cord

Contents of this set

This set has been composed by our expert.

Sonos Arc Ultra Black

Review is 8,7 out of 10, based on 24 reviews.

Sonos Sub 4 Black

Review is 9,7 out of 10, based on 7 reviews.

Show all specifications

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Rating per section

Sound quality

Review is 8,0 out of 10.

Connection options

Review is 8,0 out of 10.

Design

Review is 8,7 out of 10.

Options

Review is 7,3 out of 10.

Most helpful reviews

Our expert review

Top-class soundbar with unique built-in subwoofer

Deep bass tones through Sound Motion subwoofer
Extensive Dolby Atmos support
Simple installation
Too big for a 55 inch TV

I think the Sonos Arc Ultra is a worthy successor to the Sonos Arc. This 9.1.4 soundbar has a new built-in subwoofer, which is smaller yet delivers a deeper sound. This eliminates the need for a separate subwoofer. I enjoy True Dolby Atmos through the upward-firing speakers, but I still miss the sound behind me.

Built-in subwoofer with Sound Motion On the outside, the Arc Ultra looks a lot like the original Arc, but inside, the soundbar is completely different. The biggest improvement is the new built-in subwoofer. It's considerably smaller, yet thanks to Sound Motion technology, it delivers deeper bass. An explosion in an action movie sounds lifelike. Because the subwoofer is smaller, there's also more room for other speakers. This way, I hear clear highs, realistic mid-range, and incredibly deep bass. The balance between the different tones is so good that I don't feel a separate subwoofer is necessary.

Rich Dolby Atmos sound The Arc Ultra supports True Dolby Atmos and has four upward-firing speakers. The soundbar also has sound channels on the sides. This bounces the sound from the speakers off the walls and ceiling, back to where I'm sitting. I'm right in the middle of the action when I'm watching a thrilling movie. However, I still miss the sound behind me, especially when I'm watching a movie or series specifically designed for Dolby Atmos. For a true home theater experience, I recommend separate rear speakers, such as the Sonos Era 300 speakers.

User-friendly design You can already tell from the packaging that the Arc Ultra is a top-notch soundbar. The sound system comes in a luxurious box that clicks open instead of tearing. This makes it easy to return the soundbar if something is wrong or you're not satisfied. Once out of the box, I quickly connect the soundbar to my 55-inch TV. I only need the included HDMI and power cables. The Arc Ultra is then ready to use. I do notice that the soundbar looks quite large. Therefore, I recommend it for TVs 65 inches or larger. I adjust the soundbar's sound settings using the Sonos app. I can quickly find the bass, midrange, and treble settings and hear an immediate difference when I change anything.

Review by:
Jordin. Soundbar specialist
Date:
12 November 2025
Translation:
Automatically translated from Dutch

Review is 6,4 out of 10.

Did not meet our needs

Good sound for movies, nice bass sound
Easy to operate
Voices very clear
Poor sound quality for normal TV viewing

Sonos is known for its ease of use, but even with this soundbar, the sound quality leaves much to be desired. Even with all audio processing turned off, the sound is still being processed. You can hear this muffling of music and voice. Very annoying. So, after trying everything, I returned the soundbar and replaced it with a Bose Ultra Smart, which has crystal-clear sound without all the processing.

Review by:
Koen
Date:
9 November 2025
Translation:
Automatically translated from Dutch

Review is 10 out of 10.

Wonderful soundbar

Incredibly clear sound
Bass is great, sub is not a requirement
Fairly large

Great thing! Great sound with speech very clear and there is really a nice bass in it for when you are going to watch a movie.

Review by:
Daniel
Date:
10 November 2024
Translation:
Automatically translated from Dutch

Specifications

Product

Product
Product number	954647
Manufacturer code	ARCG2EU1BLK
Brand	Sonos
Warranty	2 years
Processing of your defect	Carry-in warranty

Physical properties soundbar

Physical properties soundbar
	Height	7,95 cm
	Width	117,3 cm
	Depth	11,05 cm
	Weight	5,76 kg
	Color	Black

Properties

Properties
	Separate subwoofer

Sound

Sound
	Number of audio channels	9
	Number of subwoofer channels	1
	Sound reproduction	Surround
	Surround sound	Dolby Atmos
	Hi-Res audio
	Radio

Slots

Slots
	HDMI connector
	HDMI ARC (Audio Return Channel)
	Digital optical connector
	Network connector
	USB port

Connectivity

Connectivity
	Bluetooth
	Built-in WiFi
	Plays from network
	Multi-room audio
	Multi-room functions	Make a stereo pair, Surround sound mode, Zones separately, Zones simultaneously
	Number of zones (audio)	32
	NFC
	DLNA
	Spotify Connect
	AirPlay
	Google Cast

Smart

Smart
	Smart home platform	Amazon Alexa, Apple HomeKit, IFTTT, Samsung SmartThings
	Compatible with smartphone / apps
	Controls via app
	Controlled via Android app
	Controlled via Apple app
	Controlled via Windows app

Product

Product
Product number	954645
Manufacturer code	SUBG4EU1BLK
Brand	Sonos
Warranty	2 years
Processing of your defect	Via Coolblue

General properties

General properties
Subwoofer type	Wireless

Subwoofer properties

Subwoofer properties
	Active speaker
	Frequency range	25 Hz
	Speaker subwoofer diameter	8 inches

Audio connectors

Audio connectors
	Speaker connector accepts cable type	Ethernet cable

Physical properties

Physical properties
Color	Black
Depth	15,8 cm
Width	40,2 cm
Height	38,9 cm
Weight	12 kg
Material	Plastic

This is the one

Sonos Arc Ultra + Sonos Sub 4 Black

Review is 8,7 out of 10, based on 24 reviews.

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Ordered before 23:59, delivered tomorrow for free

Sonos Arc Ultra + Sonos Sub 4 Black

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