This can be very frustrating for someone setting up a new system. I did not keep up with latest changes for 20 yrs.
I have a bluesound. I think the streamers that have USB are higher $$. Your streamer and DAC will give you satisfying sound. I am using a COAX, this is what is most common. Other quick sound improvements are better power cords for your Dac and streamer and an ethernet cable directly from router to streamer. All this for $300. You can obviously spend more. Hook up everything and read some more before you change course and lose money.
I have a bluesound. I think the streamers that have USB are higher $$. Your streamer and DAC will give you satisfying sound. I am using a COAX, this is what is most common. Other quick sound improvements are better power cords for your Dac and streamer and an ethernet cable directly from router to streamer. All this for $300. You can obviously spend more. Hook up everything and read some more before you change course and lose money.