Do you think perhaps this has been asked before?

Do different streamers really sound different when using an external DAC

How much difference in Sound quality can be expected from different streamers?

Streamer Comparison and Suggestions

There are hundreds of responses just on those few threads. Good luck to you.

Here are a few more for you:

Does the streamer effect sound quality

Surprised by streamer differences

why expensive streamers

Point of higher priced streamer?

Help settle a streaming argument!

Another post about a streamer upgrade

In audio everything matters, and that certainly holds for streamers and DACs.  

Yes. Each is important. My streamer is one of the most expensive components in my system. My rule of thumb is that while you must reseach with great care and purchase the very best at the price point:  30% speakers, 20% streamer, 20% DAC, 20% preamp, 20% amp. This gets you in the right ballpark to get the most out of the entire system.

I own two Aurender Streamers… the one in my main system increased the sound quality enormously, finally putting at the level of my great analog end… now I almost exclusively listen to my digital end.