I used a no brand name Chinese 25W 5V LPS cost about USD30. I found LPS, alkaline batteries and super cap all have same sound quality or different is too small I cannot notice, but it is much improvement, very close to Digione, I used coaxial output only, you can check Digione's jitter test result is better than stock SU6 : https://www.audiosciencereview.com/...measurements-of-allo-digione-rpi-s-pdif.5418/
![IMG_20230329_033344.jpg IMG_20230329_033344.jpg](https://cdn.head-fi.org/a/12025029.jpg)