Originally Posted by nanaholic
Cayin i5 outputs 190mW per channel @ 32ohms while the WM1 outputs 250mW per channel @ 16ohms for the balanced output. Assume a perfect linear relationship the WM1 should be putting out something like 125mW @ 32ohms (best case assumption, but most likely less) .
This should put the Cayin ahead of the WM1 in terms of raw power, but both would still be ahead compared to the usual AK suspects which usually only measures in the lower end of the double digits. I know the AK380 outputs 50mW @ 32ohms and that was with the renewed more powerful amp stage compared to the older 1 series and 240.
Power rating is not the end of the story however. Parts utilized in the circuit as well as the quality of the circuit board can usually differentiate good from great sound, IMO. For what's it worth, I am satisfied with the sound and volume level of my HD800 out of the 1Z in balanced output. Yes, the HD800 will sound quite a bit better from a SuSy Dynahi or GS-X MKII but I do reach out to the HD800 & 1Z quite a lot when I'm on the move around house for example.