Got this dongle, US version.
During the first test when I crudely matched volume "by the ear" I liked it more than Dragonfly 1.2 (not surprising) and Grace Balanced DAC (highly surprising) with punchy and defined bass, detailed and natural timbre of acoustic instruments and so on.
The next day I matched the volume as good as I could using cheap noise meter and 1khz tone.
After that I wasn't able to spot these differences I've been "hearing" before, lol.