This is an educated guess. I would recommend borrowing an Audio Quest Thunder high current / variable. It is more expensive than I would normally recommend. But, I have been so surprised at the performance of the Storm class Audio Quest power cords, I bet, while the first level storm is around $1K… it would be worth trying. I suspect the result would be startling. Only go through with the purchase if it is clearly worth it to you.
Typically I would recommend a DHLabs cord for your device, or trying an inexpensive Cardas.