AudioQuest DragonFly Cobalt
DragonFly Cobalt, our new flagship DAC, 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.
Topping D90 MQA
One of the top-of-the-line Topping DACs with support for balanced outputs, Bluetooth including LDAC and aptX codecs, and high resolution DSD512 and up to 32/768 PCM audio. Unlike the regular D90, this variant has support for the MQA codec.
XLR 3-Pin AES-EBU
Balanced 3-pin XLR
24 bit / 96 kHz
32 bit / 768 kHz
20 Hz - 20 kHz
ESS ES9038Q2M 32 bit with minimum-phase slow roll-off filter for more natural sound
mansr, Audiophile Style
Is the Cobalt worth the additional $100 in retail price over the Red? Apart from a 5 mm reduction in length and a blue paint job, not much has changed.
Audio Science Review
The Topping D90 produces lowest noise and distortion [of the] 220 DACs [I've] tested so far.