In terms of engineering and especially sonics this American-made DAC is beyond compare. Many products sound coherent, especially in this price range. But the QX-5’s spatial depth and imaging rank among the best anywhere, regardless of source.
–Stefan Schickedanz, Stereoplay
This fantastic review of the QX-5 DAC was published by Stereoplay of Germany in their June 2020 magazine. The full review (in German) can be downloaded below.