Question on Bottlehead DAC connectors

[glynnw]

Took my Bottlehead DAC to a friend to have a shootout with his $5K DAC.  But between the 2 of us we didn't have a cable to connect to his CD player, which had no USB out.. Next time I am taking a Toslink cable but looking into this left me with a question.  What type of connector can I use for the one labeled S/PDIF.  Despite what the internet says, an RCA connector will not work.  What do I need to use this output?

 

[Doc B]

It is for a digital coax cable with a BNC plug. I would suggest using the TOSLINK input if you already have the cable.

 

[glynnw]

Thanks, Doc.  Will use the Toslink next time he an I get together.  I was simply curious.