RingingEars
1000+ Head-Fier
I'm guessing the Wryd makes a bigger difference for DACs that also get power from the USB which the UD-301 does not.
I think the 301 uses the same USB board as the 501 and I know that there was some questions a while back about the 501s USB being powered by the 5v on the USB as opposed to having its own power supply. Not sure if this was ever resolved though.
Thanks for the honest answer though. Much appreciated...