You re not doing anything wrong, as far as how it sounds is concerned. I tried both the 250 and 150. It's meh to me. A few folks on here enjoy it due to the fact that you couldn stream from Youtube, and IIRC, Amazon as well. But is it much better than say w a RaspberryPi, iFi Zen streamer or the SOtM Neo player? Not much.
My thoughts on the HiFi Rose 150B
Well, after the honeymoon wore off I ended sending the HiFiRose 150 back. It boiled down to how I’d use it and it just wasn’t 3k better than my Auralic Aries G1. The Rose is a great piece with tons of features and it sounded great. The video features (RoseTube, Tidal music videos) is certainly cool along with the display and all the other things it can do but streaming Qobuz and Tidal it did one thing noticeably better and that was MQA which I figured it would. My Anthem isn’t MQA certified so using my Auralic USB into it doesn’t give me the full MQA experience but listening to Tidal SD and Qobuz HD/SD it was pretty close. I could have added a TV to my music room to fully enjoy what the Rose does but I have a great movie/video system so it’s not something I was ultimately willing to do. So in the end, I don’t have anything bad to say about the 150, it’s built really well, sounds great and has tons of features but it doesn’t fit my needs.