Why you can trust TechRadar
We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.
Denon Home 400: two-minute review
The Denon Home 400 sits in the Japanese brand’s completely repositioned Home 2.0 range for 2026, and it doesn’t take much to see the updates as a direct challenge to Sonos and the best wireless speakers on the market. The range features three speakers — the Denon Home 200, 400 and 600 — all of which promise spatial audio from a single box. They’re all tuned by sound masters, built for native stereo playback even as singular units, deliver an immersive experience, and have refined designs.
The Denon Home 400 sits right in the middle of the range, but occupies a bit of a sweet spot. Its $599 price tag puts it at the same ball park as the Sonos Era 300, and I think Denon comes out of the comparison looking like the better option.
Along with Sonos, though, there’s no shortage of competition from the likes of Apple’s HomePods, JBL’s Authentics 300 and the WiiM Sound smart speakers. While the Denon range technically supports Siri, this is a product that’s much more about the sound than it is the smarts.
In use, it sounds tremendous and is highly customizable with a full spatial audio experience where you really can hear the difference. The HEOS app works brilliantly, and set-up is a doddle. It also has a sense of style. This is a speaker that looks premium rather than plasticky, and that alone may make it easier to recommend than Sonos for many potential buyers.
Is it worth the premium price, though? I’ve been hands-on to find out what the Denon does differently.
Denon Home 400 review: price and availability
- Released on March 24th, 2026
- $599 / £449 / AU$999 (approx.)
The Denon Home 400 costs $599 / £449 / AU$999 (approx.) and is clearly positioned to rival the Sonos Era 300, which costs $479 / £449 / AU$749 officially, but it is a bit more likely to be available on offer, having gone down to $379 / £339 on Amazon within the past six months.
Other similarly sized rivals include the JBL Authentics 300, which costs $450 / £380 / AU$600, or the bass-heavy Brane X for $599 / £475 / AU$915. Apple fans will also, of course, consider whether a HomePod 2 ($299 / £299 / AU$479) may better suit their needs, as it has a few clever tricks and perks for the iOS faithful.
Denon Home 400 review: specs
|
Speaker drivers |
2 x 0.75-inch tweeters, 2 x 1-inch upfiring drivers, 2 x 4.5-inch woofers |
|
Amplification |
6 x Class D amps |
|
Dimensions |
11.8 x 5.9 x 8.6 inches (300 x 150 x 219 mm) |
|
Connectivity |
Wi-Fi 6E, Bluetooth, 3.5mm line-in, USB-C |
|
Streaming support |
HEOS app, Tidal Connect, Spotify Connect, Apple AirPlay 2 |
|
Voice assistant support |
Siri (only if you have a HomePod on the same Wi-Fi network) |
|
Other features |
HEOS multi-room, stereo pairing |
|
Colors |
Charcoal, Stone |
Denon Home 400 review: features
- Native Dolby Atmos with adjustable height and bass
- Several connectivity options
- Voice control only via Siri, and only if you already have a HomePod
The core selling point of all the new speakers in the Denon range is Dolby Atmos support with adjustable sound modes. I’ll go into that in more depth in the ‘Sound quality’ section below, but it is a meaningful differentiator between this speaker and most of its competition. The vast majority of other smart speakers will either not have Atmos or rely on (the admittedly clever) digital processing trick of spatial virtualization. That’s what the Denon Home 200 does, too.
The one option offering proper Atmos is the aforementioned Sonos Era 300. The Denon Home 400, just like this rival, packs in true Dolby Atmos with a six-driver setup: dedicated left and right drivers, upfiring drive units and two 4.5-inch woofers (all powered by six independent Class-D amplifiers). What this means is that you’ll get much more width — throw a Dolby Atmos track at this speaker and you’ll hear a wider soundstage — and real height, as it bounces sound off your ceiling. The adjustability in the Auto mode means you can dial in exactly how much bass extension, width or height you want.
You can use voice assistance on this speaker, but I’m not going to pretend it’s a headline feature. Apple’s Siri is the only voice assistant on offer, so you’re not going to find Google Assistant or Alexa as an option during setup. And, in order to set it up, you need to have an Apple HomePod or HomePod mini on your Wi-Fi network to handle the Siri requests you make on the Denon speaker.
Luckily, I’ve got some HomePods in another room, so I could test this, and it works fairly well, but I wouldn’t go around suggesting that this is a speaker with built-in voice control. It’s more of a niche added extra, as long as you already have an extra accessory that would cost you at least £99.
In general, the HEOS app (HEOS stands for Home Entertainment Operating System, thanks for asking) is excellent and great if you think you might set up a multi-room ecosystem of speakers after investing in this one. It covers multiple brands, not just Denon, and works with a wide range of speakers, soundbars and receivers.
Overall, the Denon Home 400 offers a broad range of connectivity options, including a 3.5mm AUX for use with turntables or MP3 players, and a simple native Bluetooth button to connect to other devices if you’re not using the app. Bluetooth LE Audio is coming via an update, and it has support for ALAC and aptX formats over Bluetooth. You’ve also got Apple AirPlay 2, Spotify Connect, Tidal Connect, and Qobuz Connect built in, too.
Through the USB-C port, you can deliver firmware updates via a pen drive or use wired Ethernet via any USB-C adapter, which is a nice benefit compared with others that might make you buy a proprietary dongle. Obviously, it’s not quite the same as built-in Ethernet, but it’s not a feature everyone would use.
There’s no remote with the speaker, it’s designed for use with the feature-filled HEOS app, where you can gather together your music services — including Spotify, Amazon Music, Deezer, Soundcloud, Tidal, Qobuz and TuneIn — and internet radio stations, along with control of the multi-room setup and audio customizations. I wish my choice of streaming service, Apple Music, were added to the picks, but it’s otherwise an app I find hard to fault.
Denon Home 400 review: sound quality
- Outstanding spatial audio performance from a single unit
- Excellent customization for height and width
- Pure mode for a more direct and balanced experience
We’re going to be talking a lot about spatial audio in this section, because that really is the Denon Home 400’s party piece. It can take a well-encoded Atmos mix and make it feel three-dimensional. It’s in the Auto setting by default, and that’s probably where I’d leave it in my environment, in which it’s more than capable of an immersive room-filling sound.
If spatial isn’t for you, you’ll prefer the Pure sound mode. This bypasses the DSP and works as a great mode for anyone wanting the typical stereo image experience.
I’d already had a chance to hear the Denon Home 400 in a London hotel suite, and that gave me a sense of just how impressive it would be. During Ed Sheeran’s Shivers, I could hear a noticeable height extension that makes it perceptibly different when compared with the Home 200. Listening to the Atmos mix of Riders on the Storm by The Doors reveals background vocals in the height layer, an element that’s harder to pick out in the neutral mode.
Having the speaker within my own apartment only further confirmed how adept it is with spatial sound. To test it, I mostly focused on playing Dolby Atmos from Apple Music over AirPlay, but I also used it with Spotify Connect, radio stations, and I set up both Spotify and Deezer within the HEOS app to test those, too. The experience is convincing, there’s a lot of clarity to be heard across the whole frequency range, and two woofers deliver significant bass oomph.
Listening to Raye’s Where Is My Husband! in Dolby Atmos is highly rewarding for how much extra detail you start to hear in the layers of instrumentation, all while keeping her powerful vocals right in the center. I used the HEOS app to dial up the width and height, and you can feel the backing vocals spread out on the soundstage, with the instruments becoming easier to identify in space.
Putting the 400 in Pure mode and switching over to Click Clack Symphony shows that there’s a place for both modes. Pure is much more direct and balanced. There’s clearly more vocal presence in this mode, and the stomps have far more impact. You can get a different sonic experience by switching between both modes, something this track shows so well — it’s bordering on ethereal in Auto with those spatial customisations, yet sounds intimate on the Pure setting.
In general, I find the sound hard to fault. By default, the Auto mode may have a smidge too much bass for my tastes, but it’s easily remedied by moving the slider down two notches in the app. The Pure mode is fairly neutral in its approach, but still has its fair share of energy and dynamism. If you listen to spatial tracks, play around with Auto, but most of us should find Pure less fatiguing, making it a better ‘set and forget’ option.
- Sound quality score: 4.5 / 5
Denon Home 400 review: design
- Durable and stylish look
- Two neutral colorways
- Will suit most living spaces
Immediately after unboxing, it’s clear that the Denon Home 400 is more than your average utilitarian speaker. The best thing about its design is the lack of visible plastic, which is only really visible on the speaker’s top section. The rest is covered by a seamless piece of fabric with no obvious seams, and the bottom of the speaker — just like every model in the new Denon range — is a sturdy titanium base plate. It adds a little bulk, sure, but also the satisfaction of knowing that this is durable and not something that can be tipped over.
Underneath the speaker, a light glows to let you know it’s turned on. This was something that my wife initially felt ruined the look, but it’s easily solved because you can lower the brightness (or turn the light off entirely) in the app. Crisis averted. There are physical controls on the right side of the device, allowing you to control volume and playback, along with three quick select buttons (for your favourite internet radio stations or streaming services) and an action button to summon voice control.
The speaker also comes in the same two neutral colorways as the rest of the range – Charcoal and Stone (my review unit). I’ve got no complaints. It’s a speaker that’s designed to look good in the living room without commanding attention, and it does exactly that. It’s also worth noting that, on the back, there’s a switch to mute the microphone and that it’s a hard-wired off button that’s not connected to the network circuitry.
I find this looks much less plasticky in comparison to rival speakers (looking at you, Sonos) and that the Home 400’s buttons and controls are easier to understand and use (looking at you, Apple). It ends up being a winner on multiple fronts.
Denon Home 400 review: Usability & setup
- Controls are easy to understand and use
- The HEOS app is intuitive and full of features
- But there’s not much voice control available here
The Denon Home 400 is an exceptionally straightforward speaker to set up and use. The box gives you the speaker unit itself and the power cable. Once it’s plugged in, you set it up with the HEOS app, a process that took me approximately five to 10 minutes, and connect it to your home Wi-Fi network, telling the app whether the speaker is away from walls, in a corner, or just in front of one wall, which helps it adapt its sound.
You do need to use the app so that you get all of the internet-connected features, but it doesn’t take long at all to get started. Once you pick some favourite radio stations in the app, you can also press and hold on the preset buttons to save them for quick access, and you can always just use the Bluetooth button to connect devices that might not be on your wireless network. The same applies to wired playback.
I tested both with my MP3 player, the Activo P1, and found it seamless in use. However, it’s worth mentioning that I couldn’t get the Denon to play back at one of its supported higher-res Bluetooth codecs over the P1; it stayed stuck in SBC despite supporting higher bandwidth options.
In day-to-day use, though, this is highly intuitive to use, both wirelessly and if you were to connect an AUX cable to an MP3 player, CD player or turntable. Denon has said a goal with this product is getting you to your music with minimal button presses, and that holds true in use, whether you’re using those quick select buttons, or just playing wirelessly over the HEOS app, Spotify Connect or AirPlay. The one downside would be for those who are used to voice control of their playlists. Unless you use Siri and already have a HomePod, this doesn’t work well for that.
If you were keen to set up multi-room groups, this would also work well, with controls within the HEOS app, plus the ability to create a stereo pair with two Denon Home 400s. It’s also a great feature that the ability to mute the microphone is a physical control, not something that exists only in software, something that’s great for peace of mind if you don’t want to use voice assistance or have your voice recorded.
- Usability & setup score: 4.5 / 5
Denon Home 400 review: value
- Premium price to match the Sonos Era 300
- Cheaper units don’t deliver spatial audio this good
- Rivals are a bit better for voice control, though
At $599, the Home 400 is priced at the top of the standalone premium home speaker market, making it a direct rival to the Sonos Era 300. For me, the Denon more than matches its Sonos competition when it comes to powerful spatial audio and is also a more stylish speaker with more intuitive control and better connectivity. The Denon gives you spatial customization missing from Sonos, and it also has built-in AUX, USB-C and the option of Ethernet.
While rivals like the Sonos Era 100 and Apple HomePod are cheaper, they’re also more locked into ecosystems. They’re good as affordable rivals, but the Denon offers the more powerful, more immersive and more customizable sound. And, while the JBL Authentics 300 also holds a lot of appeal, and I’m a particular fan of its style and retro controls, it lacks native Dolby Atmos, so it doesn’t feel like a direct rival.
The one thing you’ll want to keep in mind is the lack of capable voice assistance from the Denon at launch, but if that doesn’t matter to you, the customizable spatial sound, ability to connect to players and turntables, plus intuitive control make the Denon Home 400 a good value buy in this price tier. Just make sure you’re keen on spatial sound and know you want to hear the layers inside a mix, as that’s what sets this apart.
Should I buy the Denon Home 400?
|
Attribute |
Notes |
Score |
|---|---|---|
|
Features |
Native Dolby Atmos, with multiple connectivity options, but limited voice control possibilities. |
4.5 / 5 |
|
Sound quality |
Outstanding spatial audio, with solid set-and-forget settings. |
4.5 / 5 |
|
Design |
Durable, stylish look with two colorways to choose from, plus a general absence of plastic. |
5 / 5 |
|
Usability & setup |
Easy-to-understand controls, with an intuitive app, but needing a HomePod to make Siri work is a drawback. |
4.5 |
|
Value |
It’s not cheap, but it’s certainly worth the money with spatial audio this good. |
4.5 / 5 |
Buy it if…
Don’t buy it if…
Denon Home 400 review: also consider
| Header Cell – Column 0 |
Denon Home 400 |
Sonos Era 300 |
Apple HomePod 2 |
|---|---|---|---|
|
Price |
$599 / £449 / AU$999 )approx.) |
$449 / £449 / AU$749 |
$299 / £299 / AU$479 |
|
Speaker drivers |
2 x 0.75-inch tweeters, 2 x 1-inch upfiring drivers, 2x 4.5-inch woofers |
4x tweeters, 2x woofers |
5x tweeters, 1x woofer |
|
Amplification |
6x Class D amps |
6x Class D amps |
Not listed |
|
Dimensions |
11.8 x 5.9 x 8.6 in (300 x 150 x 219 mm) |
6.30 x 10.24 x 7.28 in / 160 x 260 x 185 mm |
5.6 x 6.6 x 5.6 in / 142 x 168 x 142 mm |
|
Connectivity |
Wi-Fi 6E, Bluetooth, 3.5mm line-in, USB-C |
Wi-Fi 6, Bluetooth 5.0, USB-C (3.5mm line-in and Ethernet via adapter) |
Wi-Fi (802.11n), Bluetooth 5.0 (not audio) |
|
Streaming support |
HEOS app, Tidal Connect, Spotify Connect, Apple AirPlay 2 |
Sonos app, Apple AirPlay 2 |
Apple AirPlay 2 |
|
Voice assistant support |
Siri (only if you have a HomePod on the same Wi-Fi network) |
Alexa, Sonos Voice Control |
Siri |
|
Other features |
HEOS multi-room, stereo pairing |
Dolby Atmos support, Sonos multi-room control, Sonos home theater option, stereo pair option |
Dolby Atmos support, Thread/HomeKit smart home hub, auto-calibration, stereo pairing option, Apple TV home theater option |
How I tested the Denon Home 400
- Tested with music streamed from Spotify, Deezer and Apple Music via AirPlay, and radio stations within the HEOS app
- Also tested Bluetooth and wired performance with the Activo P1 audio player
- Used Audio Pro A10 MkII for comparison during listening tests
- Tested over several weeks of both casual and critical listening
I tested the Denon Home 400 using a wide range of different music genres and styles, including popular hits, soundtracks, ambient playlists and classical. I listened to podcasts and radio content, too, over several weeks of testing. I primarily used the Denon Home 400 in one spot, on a table in my living room, and that gave me a sense of how well it was able to fill the space in my small flat.
I used Bluetooth and wired connections with my Activo P1 music player, and also streamed using the HEOS app itself, accessing Deezer, Spotify and radio stations from this interface. Most of my spatial listening was tested via AirPlay, playing tracks mixed for Dolby Atmos through Apple Music.
For some direct comparisons, I used the other speakers that I currently have in my flat, including an Audio Pro A10 MkII and a couple of HomePod Minis in a stereo pair. And, to get a great understanding of the speaker’s performance, I made sure to listen to the widest possible range of genres at varying volume levels.
