Suggestions for a streamer only (I have a great DAC)

I bought a Lumin U-1 mini for my Lampizator Pacific until I received my Lucas Audio Media Server.  The U-1 mini is an inexpensive solution to your requirements and does Tidal and Qobuz.  However, if you want to amplify your SQ, getting a dedicated music server is a way to go.  I love my LDMS.

Look into Small Green Computer

I've had great results with their optical network and

streaming products

Have replaced playing or buying CDs with content from

Tidal and Qobuz uzing Roon as the control point

Small Green Computer is dedicated to pushing the

technological envelope to bring customers the

highest quality digital audio possible.

I've heard the Bacch and it was impressive (I did not know it could work as a streamer, they showed it as a dac) but especially with their own 3D processing. You need to decide if that is something you want. As you already have a good dac it seems to be a waste of money otherwise.

A streamer I did not see mentioned yet is Métronome. For example their Métronome DSS.

My main worry with streamers is that they are basically computers and uses a lot of software. This may have to be updated in the future to work with later things. This means a stable company or brand is probably especially important for streamers. Or just go with a computer and install Roon Rock.
 

Forgot to say that Métronome basically split into two brands. They have Kalista also and the Kalista Dreamplay Stream is a good streamer but much more expensive.

Métronome manufacture some beautifully built electronics