Upgrade your DAC. In my experience the DAC has 95% of the sound the streamer is really not as important IMO.
@glennewdick While I see how in your situation and with your streamers this could be the result, my experience is upgrading a streamer is at least as impactful as upgrading a DAC. IME everything matters, and matters significantly in a streaming setup. If I was recommending to someone how to build a good streaming setup I’d recommend something like a 50/50 split between spending on a DAC and streamer. Again, just my experience FWIW.
Would anyone make the argument that an Innuos Zen mini is an upgrade over an N100?
No The proper comparison would be with an Innuos Zen.