I’ve had good results with Audioquest’s own adapters, costing $14.95:
https://www.audioadvisor.com/prodinfo.asp?number=AQICE90
Note that you’ll need to select either the center pin down or the center pin up version of the adapter, depending on the orientation of the IEC connector in the particular component.
Also, be aware that if the component has its center pin up what you must select is the adapter that is referred to as "center pin down," aka IEC90/1, not IEC90/2. Assuming, that is, that the power cord is to be inserted into the adapter from above.
And if the component has its center pin down, what you must select is the adapter that is referred to as "center pin up," aka IEC90/2. Assuming, again, that the power cord is to be inserted into the adapter from above.
Been there, done that :-)
Finally, note that the item numbers used by Audio Advisor mistakenly translate Audioquest’s IEC90 model numbers into "ICE90."
Best regards,
-- Al