Sonos Connect:Amp

The Sonos Connect:Amp isn't cheap, but it's a no-compromise all-in-one digital music system that's perfect for people who are serious about digital music — and about cloud-based music services in particular.

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CNET Editor

Ty is a journalist with 15 years experience in writing for IT and entertainment publications. He is in charge of the home theatre category for CNET Australia and is also a PC enthusiast. He likes indie music and plays several instruments. Twitter: @tpendlebury

At the start of 2012, rumours started spreading that Google was readying a home theatre device to rival the likes of the Apple TV and the Sonos system. But when that mythical creature turned out to be the Nexus Q, it was hard to swallow our collective disappointment.

While the Nexus Q will remain a curio until Google can boost its feature set, the competitive Sonos Connect:Amp feels like a real hi-fi system. From its solid build to the simplicity of the user interface, it's something that the Nexus isn't: refined. It's compatible with nearly every online music service on the market, and can also stream your personal digital-music collection.


Measuring 89x185x207mm, the Sonos Connect:Amp is larger than your average "small black box" media streamer, such as the Roku or Apple TV.

The Sonos features a two-tone colour scheme with an "anodized precision-machined extrusion aluminium case" nestled on a white plastic base. The 2.3kg box has some heft to it and — unlike a lot of the flimsy plastic boxes you buy today — the Connect:Amp feels really solid and well designed.

The front panel is about as minimalist as it gets: Volume Up, Down and Mute; everything else (including redundant volume controls) is controlled through an app on your tablet or smartphone. There's also no power button, since the Sonos is designed to remain in standby mode at all times.


The Connect:Amp was formerly known as the ZonePlayer ZP120, and was renamed when the Play:3 came along. While the ZP120 was initially offered as part of the BU250 Bundle, that package is no longer available, not least because the CR200 touch screen controller has been put to pasture. The company instead offers free control apps for PC, Mac, Android and iOS devices. In other words, nearly any smartphone or tablet — including iPhones, iPads, iPod Touches and all newer Android phones — can double as the remote.

The Sonos Connect:Amp offers a plethora of connections, including line-in.
(Credit: Sarah Tew/CNET )

The Connect:Amp is a rare product in that it is part music streamer and part amplifier. When I say rare, I mean that there are a couple of products like it, but most are hideously expensive music servers. The Connect:Amp, however, even features a beefy 55W -per-channel output. Obviously, the built-in amp means that it's up to you to supply your own (unpowered) speakers.

If you have an existing stereo or home theatre system and you're looking to add streaming to it, might I suggest the ampless Sonos Connect. Alternatively, you can go the all-in-one route with the Play:5 and Play:3, both of which have built-in speakers.

One feature that is offered by the Connects, and that the all-in-one Play:3 and Play:5 systems lack, is audio inputs. The Connect:Amp has a single stereo RCA input that can be used to connect an external audio device — perhaps a turntable or an iPod dock.

For speaker connections, the Sonos includes solid, spring-loaded speaker jacks at the back for connecting banana plugs or bare wires, though not spades.

Last in the list of connections is the subwoofer-out, which can be used to connect to a third-party subwoofer. Or you can opt to go with the wireless Sonos Sub instead.

One feature I kept wishing for while using the Sonos was an IR port, usually in order to mute the system. Instead, you'll either need to unlock your phone and launch the Sonos app, boot up your PC, or finally just walk over and press the Mute switch.

Audio-only (but that's a good thing)

Unlike some of the more well-known media streamers on the market, the Sonos devices are audio-only, no video. While that may seem limited in scope, the Sonos is more about focusing on doing one thing as well as possible.

Sonos' tagline is "stream all the music on Earth" — and the company's products come very close to that goal. The Sonos is compatible with nearly every popular music service: Mog, Pandora, Spotify, Sirius XM,, Slacker, Rdio, Songza, TuneIn Radio, Rhapsody, iHeartRadio, Wolfgang's Vault, Aupeo, Stitcher and JB HiFi Now — of course, your access to these will depend on location and your home networking set-up.

As mentioned above, Apple's iTunes Match isn't supported (thanks, as always, to Apple), however, the Sonos does support streaming from PCs and Macs running iTunes software, so your home music collection is always accessible. It also supports many NAS servers, for those who don't want to keep their PCs powered on all the time.

For local music, nearly all popular file formats are supported: MP3, WMA, AAC+, Ogg Vorbis, WAV, AIFF, Apple Lossless and FLAC. That said, while it will only concern a small subset of people at present (myself included), the Sonos system doesn't play back high-resolution 24-bit files: it's CD-quality only.

Totally wireless — with one caveat

The Sonos family of products is designed as a multi-room audio system, and connects to one another via a proprietary wireless mesh system. The advantage is that it's not limited by your home's Wi-Fi network. The drawback is that there needs to be at least one wired connection between your home network and a Sonos unit. (Think of it like a DECT cordless phone system: one base station needs to be plugged into the wall jack, while the others communicate with that one wirelessly.)

That gives you two alternatives: you can situate the first Sonos in your home near an Ethernet connection, or you can buy a Sonos Bridge.


Like any hi-fi system, the performance is mostly dictated by the speakers you use. When using the Connect:Amp, I got the best results from the Intimus 4T Tower Speakers with a sparkling treble, underpinned by detailed mids and tight bass. Sure, you could spend more on a dedicated amplifier, DAC and music streamer, and get better-sounding results, but it would cost a lot more and lose the cohesion and convenience that a one-box system offers.

Whether it was playing music offered by Spotify or from a local NAS, I enjoyed glitch-free playback from the Connect:Amp, and there wasn't a hint of lag time. This was especially important when connecting a TV, and I found there weren't any sync issues, despite simultaneously streaming around my apartment. The only thing to keep in mind is that any line-in signal is converted to digital, and when I hooked up a Pro-Ject Debut III turntable, I found that the sound was more restrained than when connected to an analog amplifier. As such, I would class the line-in as more of a convenience feature than a true "hi-fi" consideration.

As far as other speakers were concerned, I also had good results with the laid-back B&W 685s, though, when compared with beefier amplification, the bass was a little lean. Listening to "Life" by The Beta Band, I felt the system wasn't as capable in relaying the bass synth outro, sounding a little more reticent than my Marantz receiver. The amp was able to drive the speakers to party levels quite easily, though.

Not all speakers were as successful, and it was surprising to find one of Sonos' to be less than exemplary. Adding the Sonos Sub, I found it didn't boost the midrange performance in the same way it did with the Play:3. The inability to set a crossover from where your speakers' bass performance tails off also meant you couldn't tailor bass response. A third-party sub from the likes of HSU or REL for the same $699 price, or cheaper, would give you more flexibility and better performance.

While I found the software quite easy to use, it did have some niggling problems that competitive systems don't have. Firstly, the "sort by folders" option in the software doesn't read folders that haven't been indexed yet, and you need to reindex (but not on the fly) to find recently added files. Secondly, and quite irritatingly, it's very easy to bump the app's volume slider up to ear-splitting volumes. Thirdly, Spotify integration could be better. I was really taken by the Squeezebox Touch's take on the software, which enables users to use it in much the same way as they would use normal Spotify — starring items and editing playlists, for example. In comparison, the Sonos is limited to reading playlists and starred items. It's also difficult to play a starred album, as the Sonos is set up to play individual tracks generally, and so the continual playlist nature of "starred tracks" means playing an entire album is problematic.

That said, the Sonos apps are updated several times a year, so anything one may object to currently may well be corrected in a future update.


In my reviewing time, I used both the Connect:Amp and the Connect, and when switching back to the Connect, I found I missed its bigger, amplified brother. Building a system around the Connect:Amp makes a lot of sense if you're starting from scratch, and the total app control makes it much more compelling than the Connect — where you'd need to separately turn on your stereo and flip to the correct input before enjoying the music.

There are plenty of cheaper alternatives to the Sonos Connect:Amp. You can stream audio from a smartphone or tablet app to any Bluetooth speaker or a Bluetooth dongle, like the Belkin Bluetooth Music Receiver; but Bluetooth sound quality will leave critical listeners wanting.

Another alternative is to connect an Apple TV to any existing stereo system. The Apple TV supports all of the Sonos services, plus iTunes Match, and you can use an iPhone, iPod Touch or iPad as a remote. But with the Apple TV, you'd have to flip between a dozen apps (using AirPlay), rather than using the all-in-one Sonos control app. And — unlike Sonos — it's not useful for Android or Kindle Fire owners.

At the end of the day, the Sonos Connect:Amp isn't cheap, but it's a better no-compromise digital music system than the alternatives listed above. If you're serious about your digital music — and about cloud-based music services in particular — the Sonos Connect:Amp is a tidy, all-in-one system.


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melanthios posted a comment   

Sonos is really awesome, but really incredibly expensive. If you don't hate Apple, buy a Pyle PAMP1000 (can pick one up for around $150 incl Delivery) and an Airport Express (about $120), plus about $20-30 bucks for cables - total $300 (plus some speakers and speaker wire which you need anyway with the Sonos). This will give you a more powerful system that really works just as well, but again you have to not hate Apple.

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