Coax to BNC connection for digital


I one has a DAC with unused BNC input and a streamer with coax output, can a cable be made with appropriate terminations that would not sacrifice sonics?  
mesch
Yes.  I would suggest getting a BNC-to-BNC digital cable and then use a Black Cat BNC to RCA  adapter.  Those are the best adapters.  This configuration would actually be better then having a cable made with BNC on one side and RCA on the other side.
Hi Mesch,

To add to Auxinput’s response, just make sure that the input impedance of the BNC input and the impedances of the cable, the BNC connector(s) on the cable, and any adapters that are used are all 75 ohms, and not 50 ohms.

Also, if you already have a suitable 75 ohm RCA-to-RCA cable at hand, you might consider trying it in conjunction with an inexpensive 75 ohm BNC male to RCA female adapter, such as this one:

https://www.bhphotovideo.com/c/product/1024160-REG/remote_audio_app38_rca_phono_female_jack.html

Happy holidays! Best regards,
-- Al

I use the DH labs d750 which is terminated with rca on the transport end and bnc on the dac end.  No adapter necessary.   It is an excellent cable imho.  
https://silversonic.com/products/digital-cables/d-750/?_vsrefdom=adwords&gclid=Cj0KCQiA0ZHwBRCRA...
Thanks all for the this information. You have answered mine main concerns, regarding having a cable made, if there were adapters, and the issue as to 50 vs. 75 ohms service. I do have 75 ohm RCA cables and will will most likely look for an adapter. 

Given the DAC has BNC, should I purchase a server with BNC output I would  then just purchase a BNC cable which I suppose would need be rated for 50ohms.