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Multi-room audio: everything you need to know

Multi-room audio: everything you need to know

In a short space of time, multi-room audio went from an expensive fantasy to an affordable reality for pretty much everyone.

Today, you no longer need to trail wires or install complex control systems to be able to send your favourite tunes all around your home, controlled by the touch of a button or even just the sound of your voice.

And there are more wireless speakers at your disposal than ever, from multi-room specialists such as Bluesound and Sonos, to hi-fi brands like Naim, Bang & Olufsen and Audio Pro, and tech giants such as Amazon, Apple and Google. 

These days, you can pair products from just one multi-room-friendly brand, or have products from a mix of brands that subscribe to one of the popular open multi-room platforms such as AirPlay and Chromecast.

So, what is multi-room audio anyway?

Multi-room audio

Sonos 5.1 with Beam (Image credit: Sonos)

Two decades ago a home multi-room system would have meant a lot of wires (albeit nicely hidden, no doubt) and a fair chunk of cash. High-end custom installers can still offer a top-notch no-stress system, but a more simple, wireless solution is now within the reach of all of us.

Whether you want to start a new music system from scratch or upgrade an existing hi-fi set-up, multi-room means adding one or more (more than one, really...) wireless speakers or wireless devices to your home. These then communicate with each other and can be controlled via an app on your phone, tablet or computer. And now even by your voice. You can then create different rooms of music and either play the same track in unison, or play different music in different rooms.

You can stream music from services such as Apple Music, Spotify and Tidal (provided you have subscriptions to each), play your own music from a network-attached storage device (NAS) or computer, or stream music straight from your phone.

Brands such as Sonos, Pure and Yamaha were some of the first on the multi-room scene, but have since been joined by, well, everyone, with systems from brands as ubiquitous as Bose, Denon, LG, Samsung and Sony, and more recently, the emergence of tech kingpins Amazon, Apple and Google.

What do you need to get started?

Multi-room audio

Audio Pro C10 MkII (Image credit: Audio Pro)

It's worth remembering most multi-room speakers can now function as standalone wireless speakers, so you don't have to buy more than one speaker to get started. But it's not really multi-room until you do, though, is it?

Multi-room ranges now include wireless speakers, smart speakers, soundbars, AV receivers, stereo amplifiers and network streamers. There are also components that can connect an existing hi-fi system to a multi-room system, such as the Sonos Connect.

Brands such as Denon, Sony and Yamaha also bring their AV electronics into play, giving their home cinema amplifiers multi-room smarts so they too can join in on the audio streaming action.

How do multi-room systems work?

Multi-room audio

Bluesound's BluOS Controller app

There are two main ways multi-room systems work: by creating their own mesh network or by using your wi-fi.

Sonos, one of the early pioneers of more affordable, consumer-friendly multi-room systems, forms its own mesh network. This means having initially connected to your home internet, the speakers form their own internal network.

This way, you're not using your home wi-fi when you're streaming music and that tends to make the system more robust.

Most other multi-room systems connect and communicate using your home’s wi-fi network. This means they are reliant on the strength and stability of your network and will have an impact on your network bandwidth.

In each case, you’ll need to download the dedicated app used by each brand to connect and control your system.

All the brands mentioned here have their own app that you use to control your music across your multi-room system. Sonos has its excellent Sonos Controller, Bluesound has its BluOs Controller app, Denon its HEOS app, Yamaha uses MusicCast, B&O uses BeoLink, Naim's Audio App is up there, and so on.

In the majority of multi-room cases, you’re tied into a single brand’s ecosystem – brands want you to buy into their systems, after all – so you can’t mix a Sonos speaker with a Bluesound speaker, for instance, to create your multi-room system.

Multi-room audio

Apple HomePod

But you don’t have to stick to a single brand if you don’t want to. Thanks to open platforms such as DTS Play-Fi, Apple AirPlay and Google Chromecast, you can mix and match your multi-room system to include several brands and types of products.

Bear in mind that there are two subtle distinctions of multi-room: ones where you can stream multiple sources to multiple devices and rooms (such as Sonos or DTS Play-Fi), or single sources to multiple devices and rooms (AirPlay 2 and Chromecast).

DTS Play-Fi
Instead of creating their own app and multi-room ecosystem, brands can simply sign up to use DTS Play-Fi’s app. DTS Play-Fi is an app that lets you stream music across selected products from manufacturers such as Arcam, Audiolab, McIntosh, Klipsch, Onkyo, Pioneer, Martin Logan, Polk and Rotel. You can stream hi-res music using the app, and mix and match brands to your heart’s content – although DTS recommends a maximum of 32 connected devices before the performance starts to suffer. The What Hi-Fi? Award-winning Audiolab 6000N Play streamer uses Play-Fi.

AirPlay 2
AirPlay 2 is the latest version of Apple’s proprietary streaming protocol – one that will allow you to stream music from your iOS device (iPhone or iPad) to more than one product. There’s no separate app to download – the iPhone or iPad itself will be the controller and you’ll be able to stream music over your home's network. Along with Apple’s HomePod and HomePod Mini smart speakers naturally carrying the feature, nearly every streaming product arriving now and in the last couple of years has AirPlay 2, allowing owners to connect different brands' products together to play music.

Google Chromecast
Google’s Chromecast is yet another way you can stream music across multiple products from various manufacturers, thanks to a huge range of products supporting it – from big-brand TVs and soundbars to wireless speakers and Google Nest smart speakers. You can also bring in your old hi-fi products into the mix using the Chromecast Audio dongle, which supports hi-res music. Its biggest strength over AirPlay 2 is that it’s open to all OS platforms, whereas AirPlay only works with Apple devices as the source.

Amazon Echo & Alexa
You can also link up any of Amazon’s Echo family of smart speakers to create a multi-room set-up through its Alexa app. It doesn't support hi-res audio, but supports multi-room via Amazon Music and Spotify streaming.

Plenty of multi-room-enabled wireless speakers of course still come with the basic support for Bluetooth that easily lets you send audio directly from your device to a speaker. This allows you to send audio to your system from YouTube, web browsers, downloaded tracks, videos and more – just like a normal wireless speaker.

What about mulit-room with voice control?

Multi-room audio

Amazon Echo Dot (4th Gen) (Image credit: Amazon)

A new feature since 2017 has been the addition of voice assistants into the wireless speaker world. 

Amazon Alexa and Google Assistant are both now available on various multi-room speakers and systems, with a whole host of brands partnering with one or other of the voice systems. Apple's Siri is integrated into its HomePod speaker only, but you can still access Siri on products that support AirPlay 2 – you'll just be speaking to your iPhone instead of the speaker.

The Sonos One speaker, Beam and Arc soundbar go one step further by offering both Alexa and Siri (thanks to AirPlay 2) and the multi-room giant has integrated Google Assistant too. Once you connect the Beam or One to other supported Sonos/AirPlay 2 products in your home, you can control your entire multi-room system using voice commands.

It also means you can access the various tasks that those specific voice assistants are best at doing – for instance, ask Siri to select your favourite Apple Music tune while asking Alexa to set mood lighting on your Philips Hue smart bulbs – from one speaker.

An alternative (and cheaper) way of getting voice control is to simply plug in the puck-sized Amazon Echo Dot or Google Nest Mini (both under £50/$50) into your existing hi-fi, AV or multi-room system.

What about multi-room audio quality?

Multi-room audio

Bluesound Generation 2i (2018)

Naturally, we think audio quality should be near the top of your list of considerations. Most multi-room systems support music up to CD quality (16bit/44.1kHz), but there are also systems (such as Bluesound, Naim, Denon, Yamaha and Harman Kardon) that support high-resolution audio streaming up to 24-bit/192kHz. Google's Chromecast Audio also supports hi-res audio up to 24-bit/96kHz, and Sonos has recently got onboard hi-res audio by supporting 24-bit streaming from Qobuz.

We wouldn’t automatically equate hi-res support with the best sound quality, though, as these kinds of systems tend to lack the transparency to make the most of good quality hi-res recordings.

Multi-room systems are as much about how easy they are to use and live with, and the features they support, as their audio performance.

It’s why Sonos continues to offer the best overall multi-room experience. It has the slickest app, the widest range of integrated services, and is the best system to live with. It sounds good, too. And it’s remained relevant and fresh over the years by constantly streamlining its multi-room features. Audio Pro's system comes a close second, offering the best sound-per-pound performance we've encountered in a long while in a multi-room system.

When it comes to the sound quality of the individual products, it's simply a case of comparing on a case-by-case basis in the same way you would stereo speakers or streamers. As always, you can, of course, rely on our expert reviews.

Best multi-room systems

Multi-room audio

Audio Pro Addon multi-room system 

Audio Pro
Not the most advanced system around and its control app needs work, but no multi-room system makes better sound-per-pound sense than the Audio Pro. The key to their performance is musicality unrivalled by anything at a similar price – or even quite a lot more. And that's why they continue to take home What Hi-Fi? Awards. Multi-room speakers include the Award-winning Addon C3 and Addon C10, the five-star Addon C5 and the newly released Addon C10 MkII.

Sonos
It’s facing more competition than ever, but no multi-room offering is as complete or as pleasurable to live with as Sonos. With incomparable support for streaming services, voice assistants and a wide range of connected products, Sonos continues to dominate this sector of the tech market. Multi-room products include: Sonos One and One SL, Sonos Beam, Sonos Arc Play:5, Playbase, Playbar, and Sonos Sub, plus the collaborative IKEA Sonos speakers.

Bluesound Generation 2i
It’s no longer the default choice for those looking for multi-room with superior sound, but the Bluesound route (now in its third iteration) still has much to recommend it, especially if you want hi-res audio support. Bluesound's line-up includes Pulse 2i, Pulse Flex 2i, Node 2i, Powernode 2i and Pulse Soundbar 2i, and you can add older Bluesound models into the mix, too. 

Bluesound has recently announced a new Node and Powernode, so we look forward to seeing how they fare.

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Joe Cox

Joe is Content Director for Specialist Tech at Future and was previously the Global Editor-in-Chief of What Hi-Fi?. He has worked on What Hi-Fi? across print and online for more than 15 years, writing news, reviews and features. He has covered product launch events across the world, from Apple to Technics, Sony and Samsung, reported from CES, the Bristol Show and Munich High End for many years, and provided comment for sites such as the BBC and the Guardian. In his spare time he enjoys mixing vinyl and cycling.