I've upgraded from cheap PSU and usb powered WaveIO to self powered Alix and Wave and the difference in S.Q. is very noticeable, highly recommended this upgrade.willemoes wrote: On a sidenote, do any of the Alix and/or usb-powered Dac users use optimized power-supplies replacing wall-wart/usb-power (regulated or battery power)?
Regarding renice, i've done the same as you but didn't got the time to listen well this changes.
Regards.