It has become the new replacement over the HifimeDIY dac as a cheap but effective stepping stone into DACs.
With the HifimeDIY U2 at ~$57 without an amp, this is a much better value at ~$62 with a 130mW amp. It seems a little bright at times, but I haven't run it much.
As far as power goes, it can power the Havi, so it passes that test.
It works on my Nexus 5, but its buggy. It'll play one track, then freeze afterwards. Happens every time. Since that is the main reason I bought it, it is kind of disappointing unless UAPP (or smsl) can fix it.
This doesn't beat my GO 1000, but it is a nice value setup.