For about $5k you could get a used Innuos Zen Mk3 server/streamer and an AudioMirror Tubadour Mklll SE DAC that should be a considerable upgrade to what you’re using now. Best of luck.
What to try next?
After my episode with OPPO & Tidal on streaming. I would very much like to up my game in the streaming department. This is the way I listen most of the time. Just lazy I guess. I am currently streaming Tidal(no MQA) through the OPPO 105 with an outboard DAC. That unit is Wyred 4 Sound DAC 2V2 SE, hard wired to the internet.. The comments I read most say something like you have to spend a lot more money to do much better. The question is what are people using that they love and is it really better than what I'm using. I would upgrade and/or trade up new or used up to $5000 or so. The rest of the system is Aesthetix Calypso Pre, PS Audio M700 monos, Schmidt custom speaker cables. Signal cable & Cullen power cables(some still stock), Audio Art and Harmonic Technology XLR inter connects, and Tyler Acoustics Woodmere II speakers with stereo Rythmik F12 subs. The room is treated with some pretty decent DYI panels and base traps Thanks for any insight you may have.