Here is the test/measurement of the new $300 Dragonflay DAC which actually even worse than old one https://archimago.blogspot.com/2019/08/measurements-dragonflies-audioquest.html?showComment=1565085004090#c398148163447641682
Use VPN to see that link.
Vrms (30Ω) before vis. distorts Current @ 100%
Dragonfly v1.2 735mV / 0.15A 0.22A
Dragonfly Red 900mV / 0.11A 0.14A
Dragonfly Cobalt 950mV / 0.14A 0.17A
SMSL iDEA 1.10V / 0.18A 0.21A
So, Dragonfly Cobalt gave 950mV@30ohm = 30mW, it is pretty much like my Android with 3.5mm jack )) I just wondered, why people buying such low power junk for $300(2100RMB)?