Our Verdict 
Despite imperfect usability, the Chord Poly is an excellent streaming accessory for its Mojo DAC
For 
Wonderfully articulate and rhythmic
Sets benchmark for sound quality
Ample streaming features
Good device integration
Against 
Restricted battery life
No dedicated app
No text display
Reviewed on

Some of the best things in life come in pairs that complement each other perfectly. Fish and chips. Wine and cheese. 

You can add to that list the Chord Mojo and Chord Poly, a DAC and network streaming solution we could describe as a match made in hi-fi heaven.

If you already own the What Hi-Fi? Award-winning Chord Mojo DAC (£400), adding the dedicated Poly streaming module will bring to your Mojo the likes of DLNA, AirPlay, Bluetooth and microSD card playback. Bear in mind the Poly is designed to work exclusively with the Mojo, and cannot be used with any other DAC.

Buy the pair and you have a network streaming solution that’s a force to be reckoned with. The Chord Poly is a brilliant piece of hi-fi kit.

But if you’re an unforgiving soul, there are plenty of hurdles to jump over before you can reach this positive conclusion.

MORE: Chord Mojo review

Build

Disconnected from the Mojo, the Poly would hardly dwarf your typical vintage cigarette lighter. When the two are attached, their combined size is closer to that of a small hipflask.

So considering music streamers like the Cambridge CXN (£700) have full-width chassis, text displays and the like, you may initially feel short-changed by the Poly in your palm.

It’s certainly portable - which, of course, is one of the Chords’ main selling points, and the Poly integrates nicely into the Mojo’s design. It slots neatly into its counterpart’s digital connections.

Features

Those familiar with the Mojo will probably be quite fond of its colourful buttons, which denote power and the sampling rate of the playback file.

That still applies when the Poly is connected - so if you stream a 44k.1kHz song from your NAS drive over wi-fi, for example, the buttons will shine red. If it’s a 192kHz file, they turn blue.

The Poly has a couple of indicator lights of its own, which are more low-key and functional. They denote Mojo pairing, battery life and set-up status.

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At the Mojo’s output end, the twin 3.5mm jacks are ideal for most headphones. To connect to a system, though, you’ll need a 3.5mm-to-RCA cable.

If you’re doing the latter, the Poly takes up the Mojo’s digital inputs - so you’ll have to unplug any connected sources while you stream. And you’ll also be a slave to the Poly’s claimed nine-hour battery life. The Chord Mojo’s is ten hours.

Setting it up for DLNA use demands more from you than it probably should. Mirroring the process of assembling flatpack furniture, the journey begins with an old-school foldout paper manual. You are then prompted to use the supplied pin to press-hold the Poly’s P-status button for five seconds, which will make the Poly’s network discoverable.

Once you’ve connected your device to the Poly’s network, and to your own via the pop-up screen, the Poly is ready to stream your networked files.

More after the break

At this point, the Poly should really come clean about not having its own app. The app is the basic usability experience of most music streamers, the place from which you can access them and perform playback controls.

It’s a shame as far as we’re concerned – not only because Chord software, if it was as appetising as its hardware design, would offer an enjoyable experience, but also because you have to download a third-party DLNA server app.

Chord’s manual gives Plex and 8 Player as examples, but they both cost extra for full access. A perfectly usable free app for both Android & iOS devices is MyAudioStream Lite, but on this occasion we opt for the Android-friendly BubbleUPnP app on an LG G6 phone.

MORE: Best DACs 2017

There’s also an unlimited-capacity microSD card slot for DLNA and local playback. And you can also play music via Roon software on a PC or Mac, enabling Tidal and MQA file streaming. For this, the pop-up screen during the Poly’s wi-fi set-up requires you to tick the ‘Roon’ box.

Streaming over AirPlay and Bluetooth is simple, while Google Chromecast also features on the Poly’s ‘coming soon’ list.

The Poly doesn’t strip the Mojo of its vast file support, as it’s also capable of handling PCM files (up to a staggering 768kHz) as well as DSD256.

Sound

Although set-up and usability are more laborious than they should be, it's muxh less significant once the pairing is let loose with your music library.

In terms of musical matrimony, the Poly and Mojo could be gearing up for their Silver anniversary. Sonically, this is a match made in hi-fi heaven.

We connect the pair to our reference Gamut amplifier’s RCA input, and compared to the Cambridge CXN (our Award-winning music streamer/DAC at this sort of price), the Chord combo is clearly more articulate and rhythmically adept.

MORE: How to build the perfect hi-fi system

Playing Bon Iver’s 666ʇ, they deliver the opening two-chime notes and glitchy guitar attacks with greater clarity and texture, pursuing the harmonics of the distorted instruments with greater resolve.

The stepping-stone pattern, which rides underneath as Bon Iver stacks his dense synth-washed canvas layer-by-layer, has a closer-knit correlation with everything else.

And when it’s time for his warped, auto-tuned chop to come in, it’s placed centre-stage with a level of articulacy and dynamic discernment the Cambridge can’t quite match.

That insight extends to the low end, with heft anchoring the tuneful bassline. That’s reiterated when we play Biffy Clyro’s Wave Upon Wave Upon Wave.

The Mojo and Poly don’t duck out of the meaty riffs, and the guitar thrusts and tripping drum (which can easily sound idle through lesser electronics) have the desired impact.

The same applies to Simon Neil’s authoritative talk-vocal, which is often - mistakenly - described as sounding mundane.

The Poly/Mojo pairing may not offer quite the expanse of the bigger-sounding CXN, nor perhaps the space upon its stage, but it hardly lacks scope either. Thelonious Monk’s Locomotive is a mass of jazz, and the Chords capture the arrangement’s density without sounding claustrophobic.

There’s life, and dynamic lift, to the clarinet, and the tight liaison between the piano player and cymbal-tapping drummer is never in question.

While streaming over AirPlay and Bluetooth (from a combination of Apple’s iPad, Apple MacBook Air and the LG G6 smartphone) isn’t quite as precise, open or transparent, expectations are well met.

To test the Chords’ portability, we plug our B&W P5 headphones into the Mojo and play Slowdive’s Sugar For The Pill from Tidal over Bluetooth.

Take them out of the equation by plugging headphones directly into the smartphone and the performance isn’t anywhere near as clear, solid or detailed.

MORE: 6 of the best DACs

Verdict

Sometimes we come across a brilliant product that isn’t quite the finished article, and this is one of them.

Chord’s Poly and Mojo won’t be for everyone. It’s lacking a dedicated app, as well as a mains-powered option and accessibility to physical inputs to increase its practicality within a hi-fi system.

But the bottom line is the Chord Mojo is a five-star product, and adding £500 to the set-up for streaming privileges doesn’t change that. Doing what most Chord digital products do best, the Poly/Mojo duo sounds fantastic.

See all our Chord reviews

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Chord Poly
£499
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£499
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The Competition 

Cambridge Audio CXN

Our Rating 
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Breakdown 
Sound
Features
Build