![]() I tested quite a few of the better ones up to $200, including the DragonFly Red, and TL DR, the DragonFly Cobalt is the by far best sounding of them all, albeit not the strongest amplifying one. They start at below $20, and many of the cheaper ones are pure power-draining ornaments that add nothing to the iPhone’s sound. ![]() Today, there are portable dac/amp s like sand on the beach it seems. All DragonFlies all have male USB-A connectors that makes them the only dongles that are actually sticks (“thumbdrives”), when connected to a computer’s USB-A port. What I like about the “Black” apart from its power management, is its small form factor, and, of course, its good sound.ĪudioQuest added the more powerful DragonFly Red in 2016, and the DragonFly Cobalt in 2019. The “Black” has been my go to since it is a workhorse that has accompanied me and my iPhones around the world, from Egypt to Brazil. And whereas many other companies have copied AudioQuest’s pioneering ideas since, the Black (jointly with the DragonFly Red) still has the lowest battery consumption of all I have tested with my iPhone. The DragonFly was the first “thumbdrive” dac of its kind, and v1.5 was the first that worked with smartphones because of its low power drain. I purchased its 2016 re-incarnation DragonFly Black v1.5 upon its release. In more real-world terms, though, this is a fantastic DAC that elevates the go-anywhere, work-anywhere abilities that the more affordable models do so well, providing an extra level of performance.First was the DragonFly, which It hit the market in 2012. The DragonFly Cobalt might at first appear to be an odd addition to the range on paper, and if you need support for very hi-res PCM and DSD you will need to look elsewhere. In the time it is on test, I barely hear a moment’s cellular noise and this is vital in ensuring you are drawn into the music itself rather than being constantly distracted. The simple act of using a male USB connection also pays dividends because it allows the Cobalt to attach directly and avoid having an extra run of cabling acting like an aerial for interference. AudioQuest’s efforts at resisting noise levels have also been extremely successful. For Tidal users in particular, the combination of its small size, MQA support and ability to drive any earphone (and indeed most headphones) far beyond any sane listening level means you can enjoy its excellent performance while maintaining an easily portable set of components. It is as a mobile DAC that the Cobalt really shines, though. ![]() It manages to do this without any subjective loss of dynamics or punch and it is a very elegant balancing act. While I would hesitate to describe either the Black or the Red as fatiguing, there is a more natural feeling to the way the Cobalt handles the unplugged version of Emily King’s Can’t Hold Me that makes it easier and more enjoyable to listen to for extended periods. There is a spaciousness and order to the music that the more affordable DAC cannot achieve as reliably. Listening to the entirely instrumental Black Swans And Wormhole Wizards by Joe Satriani, reveals subtle details and microdynamics in Satriani’s playing that elude the DragonFly Red. Listening to the Cobalt attached directly to a Roon Nucleus+ (HFC 439) shows that the new decoding and filter arrangements offer significant advantages over the Red. As so many rivals lack any form of driverless operation at all, this is a significant plus point for the AudioQuest. ![]() Doing so means that it doesn’t require any USB driver so you can use it on any computer. There is a method in the madness as to why the maximum sample rate of 96kHz has been selected. ![]() Volume is adjusted on the connecting device, and the sole indicator is the DragonFly logo that lights and changes colour to indicate different sample rates. A male USB-A connection is fitted at one end and AudioQuest supplies a USB-C adapter in the box. The Cobalt uses sufficiently little power that it can be connected to a mobile phone or tablet via a relevant adapter. These refinements are partnered with a range of measures to reduce its susceptibility to noise and interference. There’s also a new filter arrangement that uses a minimum phase, slow roll off filter claimed to make it more satisfying to listen to long term. It is still built around an ESS Sabre DAC, but the higher spec ES9038Q2M is used with an ESS 9601 volume controller. Where the Cobalt differs, however, is internally. Plus the maximum sample rate supported is a relatively low 24-bit/96kHz, although native MQA decoding is supported. And it must be said, it is a bit of a head scratcher at first as there appears to be no difference between it and the Black, which is £180 cheaper. The Cobalt is designed to augment the existing Black and Red (HFC 414) members of AudioQuest’s DragonFly family of DACs. ![]()
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