I've been looking for a power supply as well and apparently the IFI power supply is measured to have less ripple and less noise than linear power supplies
https://audiophilestyle.com/forums/topic/31119-power-supply-8-group-test-lps-and-smps/#comments
https://audiophilestyle.com/forums/topic/31119-power-supply-8-group-test-lps-and-smps/#comments