My unit finally arrived so I can share initial impressions: good build quality and sound, however it would be nice they included some app for settings operation.
Soundwise it's very good when it wants to be, but it's not the case with every device. For example it provides higher quality audio when plugged to my Realme smartphone, then DS2 is showing green led. However with my Samsung Galaxy there's red led and the sound is worse. I've learned led indicates sampling rate / gain mode and it should be able to be manually changed by pressing both volume rockers simultaneously, but it dosen't do anything for me both on Realme and Samsung. I've got no control over it, been testing both same settings in the music app.
On top of that I've noticed with Realme there's some sound delay cutting first second of music, as well as muting whenever I jump to different parts of track. None of that happens with Samsung device, but the sound seems to be low gain (red light) as oppose to high gain on Realme (green light).
Will test it more. I'm debating wheter to return it back to Amazon, but may keep it, cause it was only 40$ brand new and it's good for occasional listening sessions and as a novelty small audio dongle with big sound, however at this point I wouldn't recomend it as primary dac-amp, because of the issues mentioned.
