@audphile1 Have you listened to any of the DACs you mentioned and compared them directly to the R26? I have compared the R26 directly to the Eversolo A6, A8, ANK 4.1x LE, PS Audio Directstream MK2, Berkeley Audio Alpha Reference 2 MQA, and Holo May KTE. And before the R26 I had the Denafrips Ares II, Pontus II, Gustard X26. I am telling you two things. One is that differences in DACs are small and listening for them can drive you crazy. Most people don't have the ability to closely level match and compare using identical cables etc. etc.. so opinions are highly suspect. Two is that the R26 is an excellent DAC. I prefer the Berkeley Ref 2, Eversolo A8 and Holo May KTE to the R26 but I prefer the R26 to all the other DACs I mentioned. Even so, that preference is not dramatic since all modern DACs are basically pretty competent. Some of the DACs you mentioned may be slightly better than the R26 but DACs are the last place the OP should be spending his money.
@temmple you are listening on $775 kit speakers and you are wondering whether you should be upgrading your power supply? I think you don't understand what is really going to make the biggest difference in your system. I don't know much about standmount/bookshelf speakers but the first thing I would do with your system is replace your speakers.