DAC Connections to streamer?


What’s best connection between streamer and dac - usb, coax, optical?  
Usb can handle dsd but optical doesn’t seem too.  Optical seems limited to 192.  Bandwidth for usb seems far superior vs other connects.  But if using a streamer, seems I can only use optical or coaxial (bluesound) to link streamer and dac.

Do streamers allow a connection of a usb between streamer and dac?  Bluesound doesn’t seem to.
If you use a streamer can you connect to a dac with usb?  


emergingsoul
BTW, I use a Sonore microRendu which is USB-out only. Fabulous sound quality and it’s their least expensive in the line.
The new Sonore microRendu 1.5. Is due out in oct for $399. Ie Ethernet in and usb out.

Not sure how it allows connection between bluesound and a chord tt2 dac.  
You can't connect the two. The microRendu would replace the Node 2i as your streamer. While I realize you currently own the Node 2i you asked about streamers which use USB-out and is the reason I mentioned it. You don't exactly seem pleased with your streamer at this point and if your displeasure continues you can always sell the Node 2i and purchase a different streamer with USB-out, like the microRendu. If the new microRendu is better (or equal) to their discontinued model it's a great price.