Cables for Audio Mirror Tubadour III


I'm looking for a suitable power cord (preferably < $500) for my Audio Mirror Tubadour III DAC, as well as RCA cables 
(< $300) to connect the DAC to the Rogue Audio Cronus Magnum II amp. Would love to hear from folks who have one or both brands.
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Has anyone had any luck with the tubadour iii se and a denafrips ddc such as the iris?  I'm trying to find a i2s hdmi cable that will work, and currently i'm getting static and distortion (with the music audible and muffled in the background).  I've only tried vanilla standard hdmi cables at this point (amazon basic crud) but I don't want to pull the trigger on a cable that costs more if it's not a cable issue, but instead a compatibility issue.


Thanks all!

Quick follow up, I heard back from audio mirror and he helpfully let me know that the tubadour uses ps audio standard for I2s.