What next after Lumin T2

I have the Lumin T2 streaming DAC. I have been pretty happy with it so far. I am now thinking that I can do better on the DAC side of things. Is it a good idea to go from the Lumin to an outboard DAC of higher quality? Or should I look for a better streaming DAC. I listen almost totally  from Qbuz or Tidal. I have a hard wired connection from my router to the Lumin. Rambling a little, I guess the main question is what's the next best step up from what I have. I am using a Modwright KWH 225i, and Tyler Acoustics Woodmere II speakers. mid-level, older synergistic research cabling. And a Puritan Labs 156. Thanks, Allen.