Roon Ready Writeups: The AudioQuest DragonFly meets Roon ARC Review

AudioQuest DragonFly dac

The arc of Roon: A continuous line of progression

I’m going to start by giving you a peek behind the curtain. The last few weeks have been absolutely incredible at Roon. The reason is the recent unveiling of Roon 2.0, our most exciting release yet. It’s packed with new features and delivers significant performance improvements on more hardware platforms than ever before. 

Even better, it includes something our customers have requested for a long time – something that forever changes how we use Roon. It’s called Roon ARC – think of it as your own custom-built streaming service powered by your Roon Library at home. It’s now included free of charge with every new and existing Roon subscription. With ARC, staying connected to Roon and the music we love is easier than ever! We’re genuinely humbled by your enthusiasm for ARC and delighted to hear how much you’re enjoying it. 

We’ve been surprised by how many of you have asked about the name, “Why Roon ARC? What does ARC stand for?” Roon ARC isn’t an acronym for anything. Roon ARC just felt right – it named itself after what it wanted to be. 

ARC: a curved structure spanning space that forms a bridge and connects two points.  

roon ARC

And that’s precisely what Roon ARC does. It’s a beautifully designed, intuitive mobile app that creates a bridge to your entire Roon collection of local files and streaming favorites at home – no matter where you are. It includes Roon’s goldmine of music information, Roon Radio, Daily Mixes, New Releases For You, and Roon’s Valence discovery engine – all on your mobile device. 

Just as Roon Bridge creates a bridge between your audio devices, Roon ARC provides a connection across space to your Roon Library. And it utilizes the same audio engine as your Roon setup at home. Now you can explore, rediscover, and expand your music collection with great sound – no matter where you are. 

Wait, great sound on mobile devices? That’s not a thing… is that a thing?! 

We get it. Some of you may wonder if you read that correctly. High-resolution audio wherever you are… on mobile devices? Can you do that? Aren’t mobile devices solidly MP3 territory? We’re excited to say no, they are not, and yes, you can totally do that. As always, Roon is happy to help.

We’ll show you how to get high-quality sound from Roon ARC on your mobile device using the AudioQuest DragonFly – a tiny DAC/headphone amp powerhouse disguised as a magic iridescent USB stick. Best of all, it’s one of the most affordable and enjoyable audio upgrades you can make. 

AudioQuest DragonFly red black and cobalt

Flight of the DragonFlys, a flash of sonic color 

Even the most conscientious and committed screen agnostics must admit that they spend a great deal of time with their mobile devices. As a music lover, that means the sound you’re getting from music apps probably isn’t all that it could be. More than that, none of the sound you’re getting is that good. That’s because our device’s DAC falls into the “just good enough” performance bracket, even on laptops. 

But it’s only a mobile device, right? So we deal with it. Our real listening happens on our music systems at home – we say to ourselves. But there doesn’t have to be such a vast disparity in sound quality on mobile if you take flight with a DragonFly.

They’re powered when plugged into the port of your mobile with an adapter and take over decoding from the integrated device DAC. They’ll work with tablets and nearly any Windows or Mac machine. Or you can use them as a pre-amp, plug DragonFly into the USB from a turntable, or your laptop, then connect a pair of powered speakers. Bam, instant hi-fi system.

AudioQuest’s first DragonFly appeared in 2012. Over the last 10 years, the squadron has grown to three wings. The DragonFly Black, DragonFly Red, and flight leader – DragonFly Cobalt. Three impressive DAC/headphone amps that deliver a significant upgrade in sound quality over each other and absolutely smoke the mobile’s onboard DAC. They’re USB sticks dressed in automotive-grade iridescent paint (except for Black) with a 3.5mm headphone out on the other end. Small enough to stick in your pocket or drop into a backpack. They even come with a travel case. So how do they work, you ask?

Each DragonFly model features an ESS Sabre DAC chip, advanced power circuitry, filtering, and signal implementation, producing exceptionally detailed playback of up to 24-bit/96kHz PCM and MQA audio. They have minimal impact on mobile battery life and are firmware upgradeable. The Dragonfly on the sticks lights up to indicate the resolution of the track being played: standby (Red), 44.1kHz (Green), 48kHz (Blue), 88.2kHz (Yellow), 96kHz (Light Blue), and MQA (Purple). Pretty. It reminds me of Chord’s use of color. We’ll discuss audio details a bit more when we talk about their sound using some excellent tracks AudioQuest shared with us. 

audioquest dragonfly for arc playlist

Listening Notes

I used Roon ARC to push High-Res FLAC from Qobuz and TIDAL to the DragonFlys using my iOS phone while out and about. Then used them with Roon 2.0 on an Apple Silicon MacBook Air. My headphone pairings were the Meze 99 Classics and its new open-back look-alike – the Meze 109 PRO (review coming soon). I also used the Sennheiser Drop 6XX to test their output power. I queued up the playlist AudioQuest shared with us (see the DragonFly for ARC playlist on your home page in Roon.) and let it throw songs at me. I’d pause and play tracks while swapping out DragonFlys, eager and amazed to hear their differences in real time. 

I started with the headphone output of my iPhone by shuffling the playlist. Then I free-played ARC and Roon for an hour to note the differences between the DragonFly models.

Bobby Hutcherson – Love Song from Montara

Love Song is a percolating electric piano, vibes, horns, and hand percussion track that fuses soulful jazz with 70s R&B and features the heaviest players Blue Note Records had in their roster at the time. The track is off Hutcherson’s simmering soul jazz groove-fest meets Latin rhythm 1975 album, Montara. A bit of a sleeper in the soul jazz lineage. All Blue Note albums seem to project a deeply individual groove, and this one excels at it. Its active arrangement and mix of instrumentation fit our needs perfectly.

iOS out:

With the headphone out of the iPhone, all I got was more volume. There wasn’t any degree of detail, which really robbed the track of life. It felt suffocated and flat. Still an interesting piece but obviously underserved with the OS DAC. There was clearly a lot missing.

Audioquest Dragonfly black

DragonFly Black: 

Immediately there’s a night and day difference in sound quality. It doesn’t even feel like the same song. It’s wholly alive and awash with detail. The vibes and Fender Rhodes piano resonate over each other as Afro-Cuban percussion and hand drums add depth and texture. When the horns come in, their timbre and tonal differences are vivid, finding space to breathe. The increased output power rendered greater imaging and clarity from the Meze 109 PRO.

audioquest dragonfly red

DragonFly Red: 

Just as the Black surpassed the iOS output, Red is a giant step up from the Black. The detail is much sharper but not bright or grainy. The bass extension is nice and full. The horns are incredible. There’s more space to the soundstage and depth to the recording. Everything sounds more filled out; the AudioQuest headphone amp in the Red delivers nicely. There was wonderful synergy on this track when paired with the Meze 109 PRO and enough wow factor to impress jaded gear heads.

AudioQuest Dragonfly Cobalt

DragonFly Cobalt:

This was another startling jump in sound quality. I only expected a subtle improvement, but there were remarkable differences between Red and Cobalt. The pulsing ringing current from the vibes and sparkle of the piano are soulfully articulate, the musical interplay feels more fluid with the improved resolution, and the bass has a richer depth. Horns have lovely detail and presence. All the percussion exhibits finer granular character. There’s beautiful organic density to the music, increased dynamic response, and excellent output power. The soundstage is wide but natural. Imaging is a bit more speaker-like. It’s genuinely impressive – enough so to make the listener study the specs. And I’m a sound guy, not a specs guy.

The ESS ES9038Q2M DAC chip is here. That’s the same DAC chip I’ve seen in the best-sounding DACs I’ve reviewed. But we know there’s more to a DAC than just its chip. Looking further… there’s also an AudioQuest headphone amp, improved microprocessor, mono-clock with jitter control, improved power circuitry, noise filtering, and an integrated minimum-phase slow roll-off filter. All of that results in impressively natural and thoroughly enjoyable sound. It’s truly awe-inspiring performance, especially considering the Cobalt provides sound quality of this level from a USB stick that slips into your pocket.  

The sound character observations above held when free listening on ARC and Roon Remote across the tracks on the AudioQuest Playlist and my Roon library favorites. 

audioquest dragonfly red with roon nucleus

Conclusion: Climb aboard the DragonFly.

Each move up the DragonFly color scheme resulted in an immediately detectable jump in fidelity. With the DragonFly Cobalt ultimately glowing the brightest. As it should be, it’s their flagship DAC. I can’t emphasize enough how surprised I was by what I heard. If you’re seeking a no-compromise experience that’s on par with your at-home Roon listening, Cobalt provides astounding performance in an unbelievably small package. 

But Cobalt’s excellence in no way suggests that the others aren’t star players. The entry-level Black is a vast improvement over the iOS and Mac system output. It perfectly demonstrates what adding the correct external DAC can do. Compared to Black, DragonFly Red is aflame with detail and dynamics, providing an instantly perceived leap in sound quality that had already been greatly improved. They easily drove the Meze 99 Classics, Meze 109 PRO, and even the 300Ω Sennheiser 6XX.  

They’re versatile and can be used for a range of scenarios beyond music listening. Here’s a testimonial from Noris, our Tech-Support team lead:

AudioQuest’s DragonFly DAC and headphone amps are perfect companions to Roon ARC or any listening that could benefit from improved sound quality. They remove all roadblocks to high-resolution audio on the go and on your desktop – and the entry price is unbeatable, no matter which one you choose. Grab a DragonFly, your favorite headphones, and your mobile for travel-friendly, superior sound quality wherever Roon ARC takes you. 

For more details, please see AudioQuest’s partners page.

Additional observations of note:

  • For mobile device connection, use an Apple camera adapter for iOS. The AudioQuest Dragon-Tail USB-C adapter can be used for Android.
  • Each DragonFly was rock solid with Roon ARC and Roon Remote. When using them, I didn’t have a single sync, volume, or responsiveness issue. 
  • There’s an entire DragonFly flight detachment at the ready across Roon. It’s one of the most used DACs among Roon staff. 
  • Updating the firmware of the DragonFly is as easy as downloading the AudioQuest device manager and accepting the update. 

AudioQuest DragonFly FAQs

Are these devices Roon Certified?

  • Yes, all three AudioQuest DragonFly models are Roon Tested. Simply plug them into a USB port or compatible adapter, then enable the DragonFly (or select the Zone connected to the DragonFly) in Roon to enjoy better sound!

What file formats and resolutions do they support?

  • AudioQuest DragonFlys support up to 24-bit/96KHz PCM and MQA rendering.

What type of input and output connections do they have?

  • All AudioQuest DragonFly models feature a single USB-A input
  • All AudioQuest DragonFly models feature a single 3.5mm headphone output

Tech specs: 

DragonFly Black:

  • DAC Chip-set: ESS ES9010 DAC chip with integrated minimum-phase fast roll-off filter
  • Compatibility: Roon Tested, MQA renderer
  • Audio inputs: 1 x USB-A
  • Audio outputs: 1 x 3.5 mm headphone output
  • Supported File Formats: up to 24-bit/96 kHz PCM and MQA
  • Headphone Amp: Texas Instruments TPA6130
  • Output power: 1.2V
  • Dimensions: 0.74″ (W) x 0.47″ (H) x 2.44″ (L)
  • Weight: 0lb 3.5oz

DragonFly Red:

  • DAC Chip-set: ESS ES9016 DAC chip with integrated minimum-phase fast roll-off filter
  • Compatibility: Roon Tested, MQA renderer
  • Audio inputs: 1 x USB-A
  • Audio outputs: 1 x 3.5 mm headphone output
  • Supported File Formats: up to 24-bit/96 kHz PCM and MQA
  • Headphone Amp: ESS Sabre 9601
  • Output power: 2.1V
  • Dimensions: 0.74″ (W) x 0.47″ (H) x 2.44″ (L)
  • Weight: 0lb 3.5oz

DragonFly Cobalt:

  • DAC Chip-set: ESS ES9038Q2M DAC chip with an integrated minimum-phase slow roll-off filter for more natural sound.
  • Compatibility: Roon Tested, MQA renderer
  • Audio inputs: 1 x USB-A
  • Audio outputs: 1 x 3.5 mm headphone output
  • Supported File Formats: up to 24-bit/96 kHz PCM and MQA
  • Headphone Amp: ESS Sabre 9601
  • Output power: 2.1V
  • Output Impedance: 10k ohms
  • Dimensions: 0.74″ (W) x 0.47″ (H) x 2.44″ (L)
  • Weight: 0lb 4.2oz

What comes in the box?

DragonFly Black/DragonFly Red:

  • DragonFly Black or DragonFly Red
  • DragonFly Flight (owners) Manual
  • 60-Day Roon subscription code (included with DragonFly Red only) 
  • DragonFly travel pouch. 

DragonFly Cobalt:

  • DragonFly Cobalt
  • 6″ AudioQuest Dragon-Tail (USB-C male to USB-A female adapter)
  • DragonFly Flight (owners) Manual
  • 60-Day Roon subscription code
  • DragonFly travel pouch.