I say no based on experience with the Sonore OpticalRendu and the 'audiophile' power supply and audiophile cable they sell for a lot more money (not power cord) I compared this audiophile variant vs 2 other standard OpticalRendu's. I was not able to do a perfect A+B comparison since I did not have 2 identical DACs.
After this experience I am not spending extra on these type of power supply cables.