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    The Computer Audiophile

    New AudioQuest DragonFly Cobalt

    The official press embargo is over and we can release details of the new AudioQuest DragonFly Cobalt. Mine arrives on Wednesday via FedEx. I can't wait to connect my cans and give it a workout. Until then, here is the official press release and accompanying information from AudioQuest.

     

    DF-Compare.jpg

     

     

    DF-Cobalt_PR-2019_070519.pdf

     

    DragonFly Cobalt_ComparisonChart_white_6.20.19.pdf

     

     

    AudioQuest Introduces High-Performance Portable USB DAC: DragonFly Cobalt 

     

    In 2012, the original AudioQuest DragonFly thoroughly disrupted the DAC market. For so many casual enthusiasts who had never previously considered the possibility of improving their digital-audio experience, DragonFly was nothing short of a revelation. Meanwhile, even the most experienced audiophiles were compelled to reexamine long-held notions of what a DAC could and should be. Stereophile’s Art Dudley enthusiastically summarized, “DragonFly is fun: It’s a thumb in the eye of those tea-pinky tyrants who would tell the rest of us what is and is not high end. I can think of no more recommendable product in digital audio.” 

     

    In the early months of 2015, AudioQuest surpassed its previous achievements with DragonFlys Black and Red—two sensational models that offered improved performance-to-cost ratios with unprecedented sound quality, free firmware updates, and, of course, the biggest news of all, compatibility with Apple® and Android® smartphones. 

     

    And now comes DragonFly Cobalt ($299.95 US)—AudioQuest’s new flagship DAC. Cobalt takes what music lovers around the world have come to expect from the multi-award-winning DragonFly family—naturally beautiful, seductive sound—and strips away fuzz and fog that weren’t even noticeable until Cobalt removed them.

     

    How is this possible? Like the critically acclaimed DragonFly Red, Cobalt has the robust 2.1-volt output to drive almost any headphone, uses a bit-perfect digital volume control for outstanding signal-to-noise ratio, enables seamless compatibility with Apple and Android devices, and is an exceptionally competent and affordable MQA renderer.

     

    Cobalt’s precedent-setting performance is made possible by multiple significant upgrades:

     

    • New, more advanced ESS ES9038Q2M DAC chip with a minimum-phase slow roll-off filter for more natural sound.
    • Microchip’s superb PIC32MX274 microprocessor draws less current and increases processing speed by 33%.
    • Improved power-supply filtering that specifically increases immunity to WiFi, Bluetooth, and cellular noise.
    • Includes AudioQuest’s new DragonTail USB-A (female) to USB-C (male) adaptor to easily accommodate the increasing number of electronic devices that feature USB-C ports. 
    • Contoured enclosure measures just 2.26” x 0.73” x 0.47” (57.5mm x 18.6mm x 11.9mm), making the latest DragonFly 10% smaller than its predecessors.

     

    Like previous models, Cobalt uses Gordon Rankin’s precedent-setting StreamLength® asynchronous-transfer USB code. Further, in Gordon’s monoClock® technology, a single ultra-low-jitter clock generated from the ESS ES9038Q2M DAC chip runs the ESS chip functions as well as all microcontroller functions. This superior clock enables DragonFly Cobalt to provide greater resolution and clarity than DACs with multiple clocks.

     

    With AudioQuest’s DragonFly USB DAC, music appreciation and exploration are limitless: Plug into an Apple or Windows® computer or connect to an iOS® or Android mobile device. Play YouTube or Vimeo videos. Go hunting on Bandcamp or SoundCloud. Explore playlists on Spotify or Pandora. Stream high-res audio from Tidal or Qobuz. No matter the choice of musical pleasure, DragonFly delivers beautiful sound to earbuds, headphones, desktop speakers, or complete audio systems, unraveling the emotional expression and nuance that makes music and movies so enjoyable. Now, more than ever before, naturally beautiful sound is right at your fingertips—however you want it, whenever you want it. 

     

    The first 10,000 units of DragonFly Cobalt will come packaged with vouchers for trial subscriptions to the outstanding Tidal and Qobuz music-streaming services. Cobalt customers can begin their musical journeys with two new AudioQuest playlists—On an AudioQuest and Making Connections—available on Tidal and Qobuz, respectively. 

     

     

    DragonFly Cobalt

    US RETAIL PRICE: $299.95

    SHIPPING TO DEALERS NOW

     

    What’s New

    • New ESS ES9038Q2M DAC chip with minimum-phase slow roll-off filter for more natural sound
    • New Microchip PIC32MX274 microprocessor draws less current and increases processing speed by 33%
    • Improved power-supply filtering that specifically increases immunity to WiFi, Bluetooth, and cellular noise
    • Includes form-fitting DragonTail USB-A (female) to USB-C (male) adaptor
    • Smaller, contoured enclosure

     

    What It Does

    • Dramatically improves sound from MP3s, YouTube, etc.
    • Delivers high-end performance from high-res and MQA & Masters files
    • Bit-perfect variable output drives powered headphones, powered speakers, or power amp
    • Fixed output feeds preamp or AV receiver

     

    Compatibility

    • Windows 7 and later
    • Apple macOS 10.6.8 and later
    • iOS 5 and later (requires Apple USB adaptor)
    • Android 5 and later (requires micro-USB DragonTail, USB-C DragonTail, or other Android USB adaptor)
    • Linux (AudioQuest does not provide technical support)

     

    Sample Rates/Playback Status (indicated by LED color)

    • Standby (Red)
    • 44.1kHz (Green)
    • 48kHz (Blue)
    • 88.2kHz (Amber)
    • 96kHz (Magenta)
    • MQA (Purple)



    User Feedback

    Recommended Comments



    4 hours ago, mansr said:

    A word of caution: after plugging it in, the first volume change makes it jump to max regardless of what was requested. Over headphones, that could get unpleasant. Clearly a firmware bug.

     

    I noticed something like this on my Android phone -- fixed it by uninstalling, reinstalling UAPP, changing the volume steps from the default 20 to 100 within UAPP, and making sure the master hardware volume level was set for less than half of full output. 

     

    I had a similar problem with the Red on my Android phone (never had this problem with an iPod touch). The problem seemed to reappear every time I loaded a new version of Android on my phone. I just assumed it was a problem with Android or Samsung hardware.

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    7 hours ago, lucretius said:

    I noticed something like this on my Android phone -- fixed it by uninstalling, reinstalling UAPP, changing the volume steps from the default 20 to 100 within UAPP, and making sure the master hardware volume level was set for less than half of full output. 

     

    I had a similar problem with the Red on my Android phone (never had this problem with an iPod touch). The problem seemed to reappear every time I loaded a new version of Android on my phone. I just assumed it was a problem with Android or Samsung hardware.

    My PC does not run Android.

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    20 minutes ago, mansr said:

    My PC does not run Android.

     

    I also tried on Windows.  However, I did not have my phones to my ears, when first plugging in the Cobalt. I did notice that it played loud and I just thought the volume control was too high.  I lowered the Windows volume control and all was fine.  Rebooting and/or reinsertions of the Dragonfly did not bring back the experience of jumping to full volume.

     

    OTH,  the volume range of the Dragonfly Cobalt appears to map to a Windows volume range of 1 - 10 and not 1- 100. (That was similar for the Red as well.) That should be fixed in the Cobalt's firmware.

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    Just now, lucretius said:

    I also tried on Windows.  However, I did not have my phones to my ears, when first plugging in the Cobalt.

     

    I did notice that it played loud and I just thought the volume control was too high.  I lowered the Windows volume control and all was fine.  Rebooting and/or reinsertions of the Dragonfly did not bring back the experience of jumping to full volume.

     

    OTH,  the volume range of the Dragonfly Cobalt appears to map to a Windows volume range of 1 - 10 and not 1- 100. (That was similar for the Red as well.) That should be fixed in the Cobalt's firmware.

    The hardware range is 0-64. Software may choose to map that onto a different scale.

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    12 minutes ago, mansr said:

    The hardware range is 0-64. Software may choose to map that onto a different scale.

    Yes.  Could it be that the firmware implements a linear control when that should be logarythmic?

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    44 minutes ago, lucretius said:

    Yes.  Could it be that the firmware implements a linear control when that should be logarythmic?

    It's a dB scale. That's easy to verify by measuring the output level.

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    The max value is written to the volume control register after a somewhat random delay. In the capture above, it happened almost immediately. Sometimes it takes a few milliseconds.

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    On 7/16/2019 at 9:35 AM, mansr said:

    The max value is written to the volume control register after a somewhat random delay. In the capture above, it happened almost immediately. Sometimes it takes a few milliseconds.

     

    You said earlier that this happens after plugging in the device and making the first volume change.  I assume that subsequent volume changes are fine (seems to be the case with my testing).  However, I still noticed that at a volume of about 10 or 11 or 12  in Windows, the actual volume was insanely loud and it was hard to notice any difference when moving the Windows system fader among the higher values. So I am assuming there is another issue in addition to the firmware issue you pointed out.

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    The particular audio codec your mb uses?  Worth seeing if there is an updated driver or documentation.

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    Anyone else not getting a magenta color on the LED for 96kHz music? My LED is white for 96kHz. I get all the other colors as described in the manual but 96kHz tracks make the Cobalt’s LED show white. Now, maybe it’s just a really faded magenta, but I’ve changed out enough printer cartridges to know what magenta looks like. Just thought I’d ask. I’ll post in other forums as well and report back.

     

    Cheers

    Gus 

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    4 hours ago, Gus141 said:

    Anyone else not getting a magenta color on the LED for 96kHz music? My LED is white for 96kHz. I get all the other colors as described in the manual but 96kHz tracks make the Cobalt’s LED show white. Now, maybe it’s just a really faded magenta, but I’ve changed out enough printer cartridges to know what magenta looks like. Just thought I’d ask. I’ll post in other forums as well and report back.

    I get white or possibly pale blue. The colour for 88.2 kHz is something I'd describe as yellow rather than amber, but I guess that's close enough.

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    6 hours ago, lucretius said:

    You said earlier that this happens after plugging in the device and making the first volume change.  I assume that subsequent volume changes are fine (seems to be the case with my testing).

    The first volume change after plugging in causes the glitch. After that it's fine.

     

    6 hours ago, lucretius said:

    However, I still noticed that at a volume of about 10 or 11 or 12  in Windows, the actual volume was insanely loud and it was hard to notice any difference when moving the Windows system fader among the higher values. So I am assuming there is another issue in addition to the firmware issue you pointed out.

    The volume control runs from max (no attenuation) to -64 dB in 1 dB steps for a total of 65 different levels. I have no idea how Windows maps those onto its scale. It might not even be a linear translation. Does it use a custom Windows driver or the built-in Audio Class support?

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    2 hours ago, mansr said:

    The first volume change after plugging in causes the glitch. After that it's fine.

     

    The volume control runs from max (no attenuation) to -64 dB in 1 dB steps for a total of 65 different levels. I have no idea how Windows maps those onto its scale. It might not even be a linear translation. Does it use a custom Windows driver or the built-in Audio Class support?

     

    There is no proprietary driver for the Dragonfly. When plugging in the device for the very first time, Windows sets up an endpoint configured to use WASAPI -- I don't think Windows has it's own customized driver for this device. 

     

    Also, are you sure those are 1db steps (or is each step just a percentage of full volume)?

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    7 hours ago, Gus141 said:

    Anyone else not getting a magenta color on the LED for 96kHz music? My LED is white for 96kHz. I get all the other colors as described in the manual but 96kHz tracks make the Cobalt’s LED show white. Now, maybe it’s just a really faded magenta, but I’ve changed out enough printer cartridges to know what magenta looks like. Just thought I’d ask. I’ll post in other forums as well and report back.

     

    Cheers

    Gus 

     

    I got the blue color on the LED for 48, 88.2 and 96.  I don't know if that was an isolated case (i.e. your's may be different) or not.

     

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    6 minutes ago, lucretius said:

    There is no proprietary driver for the Dragonfly. When plugging in the device for the very first time, Windows sets up an endpoint configured to use WASAPI -- I don't think Windows has it's own customized driver for this device. 

     

    Also, are you sure those are 1db steps (or is each step just a percentage of full volume)?

    I'm sure. The values go straight into the ESS chip where they (supposedly) represent dB attenuation. Also, the measured output level agrees.

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    Thanks @mansr and @lucretius for describing your LED colors. A person responded on a Head-Fi forum that he also sees LED behavior that doesn’t match the manual. At least I know it’s not a problem with my DFC.

     

    As for the volume discussion, I’ve only tried the DFC on an iPad so far and have not encountered the problem there. Should I expect it on a MacBook Pro?

     

    Cheers

    Gus

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    24 minutes ago, Gus141 said:

    As for the volume discussion, I’ve only tried the DFC on an iPad so far and have not encountered the problem there. Should I expect it on a MacBook Pro?

    I'd say, be prepared for it anywhere.

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    11 hours ago, mansr said:
    Quote

    However, I still noticed that at a volume of about 10 or 11 or 12  in Windows, the actual volume was insanely loud and it was hard to notice any difference when moving the Windows system fader among the higher values. So I am assuming there is another issue in addition to the firmware issue you pointed out.

    The volume control runs from max (no attenuation) to -64 dB in 1 dB steps for a total of 65 different levels. I have no idea how Windows maps those onto its scale. It might not even be a linear translation. Does it use a custom Windows driver or the built-in Audio Class support? 

     

    For my Dragonfly Red, the Windows volume control maxes out at about 30 to 35 (after 35 it's all full volume). I could live with that, since there's still enough room to make meaningful sound level adjustments; however, for the Dragonfly Colbalt I tested, the Windows volume control maxed out much sooner -- making meaning sound level adjustments much more difficult.

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    7 minutes ago, lucretius said:

    For my Dragonfly Red, the Windows volume control maxes out at about 30 to 35 (after 35 it's all full volume). I could live with that, since there's still enough room to make meaningful sound level adjustments; however, for the Dragonfly Colbalt I tested, the Windows volume control maxed out much sooner -- making meaning sound level adjustments much more difficult.

    Is that on a 0-100 scale? Guess I should hook it up to a Windows machine and see what's going on. The Windows driver could very well be doing something strange.

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    1 hour ago, mansr said:

    Is that on a 0-100 scale? Guess I should hook it up to a Windows machine and see what's going on. The Windows driver could very well be doing something strange.

     

    Yes, the Windows fader is in a 0-100 scale.

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    On 7/8/2019 at 11:17 PM, firedog said:

    Everyone has had the same blurb today (sorry Chris) but I'd like to actually hear from someone who has heard it and compared it to the Red and other inexpensive DACs like iFi.

    John Darko has auditioned one; great video available from Berlin.

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    On 7/12/2019 at 4:49 PM, lucretius said:

     

    I believe the volume issue related only to Android phones -- Android was limiting the output. This has been corrected (at least for my phone) with updates.  There was never a problem with Windows 10, AFAIK.

     

    The volume issue I'm referring to was for Windows for (at least) the Dragonfly Black. You'd get to literally volume level 2 or 3 and the DAC would be

    MAX VOLUME

    ANDALMOSTORCOMPLETELYBLOWOUTYOUREARDRUMSANDYOUREQUIPMENT.

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    1 hour ago, stuck limo said:

     

    The volume issue I'm referring to was for Windows for (at least) the Dragonfly Black. You'd get to literally volume level 2 or 3 and the DAC would be

    MAX VOLUME

    ANDALMOSTORCOMPLETELYBLOWOUTYOUREARDRUMSANDYOUREQUIPMENT.

     

    Ouch!  Was the issue corrected later in firmware?  (E.g. With my Dragonfly Red, I could go up to about Windows volume 30-35 before hitting full volume.)

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    I’m a long-time user of the Dragonfly Red. Just got the Cobalt. It has more punch, ease, air, and better overall presentation than the Red, even with hard to drive headphones. Really nice. I use it mostly with an iPhone XS Max (plus the USB3 camera adapter). Headphones I use: HD600, HD650, AKG 702, AKG 7xx, Denon AH-D2000, Noble Kaiser 10 custom IEM.

     

    LED sample rate color coding is different from the DF Black & Red. Initially I thought there was something wrong with the Cobalt as I didn’t expect the color coding to be different from the others. But I realize the Cobalt’s coding makes more sense: Green is 44.1, Blue is 48, Light green is 88.2, Light blue is 96, Purple is MQA rendering. So the greens are for the 44 family, blues for the 48 family, and such. Easy to remember. In contrast the Black & Red have a non-sensical color scheme: Green/Blue/Amber/Magenta/Purple for the same progression.

     

    PS: Cobalt’s literature says 88.2 should look yellow. Nah... It is light blue.

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